Document title:

SAMPEX Level 2 Data Products NSSDC Submission Description

Project: SAMPEX

NDADS Datatypes:

SAMPEX_30S_FLUX_ASCII

SAMPEX_30S_FLUX_CDF

SAMPEX_30S_RATE_ASCII

SAMPEX_POLCAP_FLUX_ASCII

SAMPEX_POLCAP_FLUX_CDF

SAMPEX_POLCAP_RATE_ASCII

EID: LEVEL_2_DOC

Super-EID (There may be other documents also identified by this
super-EID.):

Document

Documents

NDADS filename: NDADS stores only an rtf version \-- SAMPEX_L2_DOC.RTF

TRF entry: b46428.doc in NSSDC\'s controlled digital document library,
Sept.

1998\.

Document text follows:

\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--

***SAMPEX***

***Level 2 Data Products***

***NSSDC Submission***

***Description***

**M. H. Lennard, J. E. Mazur, and G. M. Mason**

![](media/image1.wmf){width="2.263888888888889in" height="2.25in"}

**Version 1.0**

**26 February 1996**

Department of Physics

University of Maryland

College Park, Maryland 20742

**Preprint \# PP96 - 69**

Table of Contents

Page

Scope 1

Introduction 1

1.0 Submission Contents 3

General Description 3

2.0 Data Record Format Descriptions 5

2.1 30 second count rate data records 5

2.2 30 second flux data records 6

2.3 polar cap count rate data records 7

2.4 polar cap flux data records 8

Appendix 1 - TIME formats 9

Appendix 2 - Position and Magnetic Field Data 10

Appendix 2.1 Models 10

Appendix 2.2 Dynamic Integration Step Size 10

Appendix 2.3 Detailed Point Descriptions 11

Appendix 2.4 SAA FLAG 16

Appendix 2.5 Spacecraft Pointing Programs 17

2.5.1 Original Pointing Program 17

2.5.2 Trapped ACR Optimized Pointing Program 17

2.5.3 Experimental 1 RPM Pointing Program 18

Appendix 3 - LICA count rates 19

Appendix 4 - HILT count rates 20

Appendix 5 - MAST count rates 22

Appendix 6 - PET count rates 25

Appendix 7 - Fluxes (LICA, HILT, MAST, PET) 27

Appendix 8 - Data Quality Flag Overview 29

Appendix 9 - LICA data quality flags 30

Appendix 10 - HILT data quality flags 32

Appendix 11 - MAST data quality flags 34

Appendix 12 - PET data quality flags 36

Appendix 13 - Reference Documents 38

#  {#section .unnumbered}

# Scope

This document describes the four Level 2 data sets delivered to the
National Space Science Data Center by the SAMPEX Science Working Group.
The one Level 1 data set, consisting of Master Data Files (MDFs), is
described in the [SAMPEX Master Data File Description]{.underline} (see
Reference Documents). The Level 2 data sets described here are supplied
as formatted ASCII files. The remainder of this document describes the
contents of the Level 2 files.

Reference Documents are in Appendix 13. A complete description of the
SAMPEX mission and instrumentation was published in *IEEE Trans. Remote
Sensing, 31,* 1993.

*[SAMPEX information on World Wide Web:]{.underline}*

In addition to the reference documents, there is a SAMPEX home page on
the world-wide-web at:

http://lepsam.gsfc.nasa.gov/www/sampex.html

The WWW contains the instrument and mission papers from the *IEEE* issue
cited above, plus data and other information.

# Introduction

The Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) was
launched on 3 July 1992 into an 82° inclination 520 x 670 km orbit.
SAMPEX carries four energetic particle instruments:

• HILT, the Heavy Ion Large Telescope, was constructed by the
Max-Planck-Institut, Garching, Germany, and the Aerospace Corporation,
Los Angeles. HILT is a highly sensitive *dE/dx* vs residual energy
telescope that used a flow through gas proportional counter, silicon
solid state detectors, and a CsI crystal to identify particle type,
energy, and arrival direction.

• LICA, the Low Energy Ion Composition Telescope, was constructed by the
University of Maryland. LICA is a time-of-flight mass spectrometer that
identifies particle type, energy, and arrival direction by their
time-of-flight over a \~0.5 m flight path, along with their residual
energy.

• MAST, the Mass Spectrometer Telescope, was constructed by the
California Institute of Technology and Goddard Space Flight Center. MAST
is an ultra-high mass resolution spectrometer that identifies particle
type, energy, and arrival direction by multiple *dE/dx* vs. residual
energy measurements, along with position sensing detectors that allow
determination of the particle arrival direction and trajectory within
the telescope.

• PET, the Proton Electron Telescope, was constructed by the California
Institute of Technology and Goddard Space Flight Center. PET detects
electrons, protons, and helium nuclei by the *dE/dx* vs. residual energy
method.

A complete description of the SAMPEX mission and instrumentation was
published in *IEEE Trans. Remote Sensing, 31,* 1993.

For further information about the instrumentation, contact:

+---------------------+-----------------------+-----------------------+
| MAST or PET         | LICA                  | HILT                  |
+---------------------+-----------------------+-----------------------+
|                     |                       |                       |
+---------------------+-----------------------+-----------------------+
| Dr. R. A. Mewaldt   | Dr. J. E. Mazur       | Dr. B. Klecker        |
|                     |                       |                       |
| Space Radiation     | Department of Physics | Max Planck Institut   |
| Lab.                |                       |                       |
|                     | University of         | D-85740 Garching      |
| 220-47 Caltech      | Maryland              |                       |
|                     |                       | Germany               |
| Pasadena, CA 91125  | College Park, MD      |                       |
|                     | 20742                 | k                     |
| dick                |                       | lecker@sampx1.umd.edu |
| @citsrl.caletch.edu | mazur@sampx3.umd.edu  |                       |
+---------------------+-----------------------+-----------------------+
|                     |                       |                       |
+---------------------+-----------------------+-----------------------+

For further information about the Data Processing Unit, contact:

+-----------------------------------------------------------------------+
| DPU                                                                   |
+-----------------------------------------------------------------------+
|                                                                       |
+-----------------------------------------------------------------------+
| Dr. J. B. Blake                                                       |
|                                                                       |
| MS2/259                                                               |
|                                                                       |
| Aerospace Corp.                                                       |
|                                                                       |
| PO Box 92957                                                          |
|                                                                       |
| Low Angeles, CA 90009                                                 |
|                                                                       |
| DIRAC2::BLAKE                                                         |
+-----------------------------------------------------------------------+
|                                                                       |
+-----------------------------------------------------------------------+

# 1.0 Submission Contents

The SAMPEX Level 2 data products NSSDC submission contains four data
sets:

  ---------- ------------------- -------------- -------------------------
  Data set:  Contents            Portion of     Time resolution
                                 Orbit covered  

                                                

  1          all counting rates  entire orbit   30 s

                                                

  2          selected fluxes     entire orbit   30 s

                                                

  3          all counting rates  polar cap      1 point per polar cap
                                                pass

                                                

  4          selected fluxes     polar cap      1 point per polar cap
                                                pass
  ---------- ------------------- -------------- -------------------------

Fluxes: are in units of particles/sec cm2 sr MeV/nucleon

Polar cap: is defined as that portion of the orbit above 70° invariant
latitude. *Note: the spacecraft does not reach or exceed 70° on every
orbit, so some polar passes are not present.*

Files with 30 s time resolution are organized on a 1 file per day
(midnight-midnight UT) basis. Files containing averages over the polar
caps are organized on longer (\~1 year) runs of data.

## General Description

**File format:** flux and count rate files all follow the general format
shown in Figure 1. A variable number of ASCII **header records** at the
start of the file contains run-time information and history for the
generation of this file \-- this information is for internal
documentation only and can be ignored by the user. Following the header
records is a single **column** header record with comma-delimited names
of each data column. This is intended for use in reading the flatfile
into commercial programs such as Kaleidagraph. Immediately following the
column header records are the data records (variable number) described
below.

**Data record format:** each group of 30-second averaged counting rates
and the selected fluxes derived from them are accompanied by position,
attitude and model magnetic field parameters obtained from the PS set of
the Master Data File. These parameters are described in Appendix 2. The
PS set closest to the start of the 30 second averaging interval is
selected. Each group of 30-second rates and fluxes contains a live time
variable for each counting rate, sigma values calculated for each flux
value, and data quality flags.

Each group of polar cap averaged counting rates and the selected fluxes
derived from them are accompanied by a start and end time of the polar
cap pass, a flag indicating North or South polar region, a live time
variable for each counting rate, sigma values calculated for each flux
value, and data quality flags.

The counting rates and live times are obtained from the \"browse
files\". The live time variable is the number of seconds the instrument
was measuring a particular counting rate. Two additional time variables,
SAMPEX time and ISO time, obtained from the browse files, are included
to indicated the actual beginning time of the rate averaging interval.

![](media/image2.wmf){width="5.972222222222222in"
height="5.819444444444445in"}

**Fig. 1.** Flatfile file structure

# 2.0 Data Record Format Descriptions

## 2.1 30 second count rate data records

The content of each ASCII data record of the 30 second count rate files
for each orbit is as given in the table 2.1. Each record contains items
for a single 30-second interval. The table includes references to
appendices that contain further detail on each item.

Table 2.1

Record Format for 30 Second Count Rate files

+--------+--------------+----------------------------+-----------------+
| Item   | Format       | Description                | Reference       |
| \#     |              |                            |                 |
+--------+--------------+----------------------------+-----------------+
|        |              |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 1      | I10,x        | SAMPEX time                | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 2      | A24,x        | ISO time                   | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 3      | A18,x        | MM/DD/YY HH:MM:SS          | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 4      | I8,x         | SAMPEX Orbit \#            | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 5      | 3(I3,x)      | Program version #s         | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 6      | 65(1PE11.3   | Position and magnetic      | Appendix 2      |
|        | ,x),I3,x,2(1 | field data                 |                 |
|        | PE11.3,x),I2 |                            |                 |
|        | ,x,1PE11.3,x |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 7      | 12           | LICA: 12 count & live time | Appendix 3      |
|        | (I10,x,I3,x) | pairs & 6 data quality     |                 |
|        |              | flags                      | Appendix 8      |
|        | 6(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 8      | 24           | HILT 24 count and live     | Appendix 4      |
|        | (I10,x,I3,x) | time pairs & 7 data        |                 |
|        |              | quality flags              | Appendix 9      |
|        | 7(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 9      | 78(I10,x,    | MAST 78 count and live     | Appendix 5      |
|        | I3,x)        | time pairs, & 4 data       |                 |
|        |              | quality flags              | Appendix 10     |
|        | 4(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 10     | 33(I10,x,    | PET count and live time    | Appendix 6      |
|        | I3,x)        | pairs, & 4 data quality    |                 |
|        |              | flags                      | Appendix 11     |
|        | 4(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 11     | I3           | SAA flag                   | Appendix 2      |
+--------+--------------+----------------------------+-----------------+

Notes:

1\) \"x\" in above formats marks the location of comma separators of
data items

2\) total number of comma delimited items in one data record:

7 + 70 + 24 + 6 + 48 + 7 + 156 + 4 + 66 + 4 + 1 = 393

3\) \"counts\" means the sum of accumulator counts

4\) \"live times\" are in seconds for each accumulator

5\) Each file contains data for a single 24 hour period
(midnight-midnight UT).

6\) ISTP standard fill values for count data: -2147483648

## 2.2 30 second flux data records

The content of each ASCII data record of the 30 second flux file is as
given in the table 2.2. Each record contains items for a single
30-second interval. The table includes references to appendices that
contain further detail on each item.

Table 2.2

Record Format for 30 Second Flux files

+--------+--------------+----------------------------+-----------------+
| Item   | Format       | Description                | Reference       |
| \#     |              |                            |                 |
+--------+--------------+----------------------------+-----------------+
|        |              |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 1      | I10,x        | SAMPEX time                | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 2      | A24,x        | ISO time                   | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 3      | A18,x        | MM/DD/YY HH:MM:SS          | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 4      | I8,x         | SAMPEX Orbit \#            | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 5      | 3(I3,x)      | Program version #s         | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 6      | 65(1PE11.3   | Position and magnetic      | Appendix 2      |
|        | ,x),I3,x,2(1 | field data                 |                 |
|        | PE11.3,x),I2 |                            |                 |
|        | ,x,1PE11.3,x |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 7      | 3            | LICA fluxes (3),           | Appendix 7      |
|        | (1PE11.3,x), |                            |                 |
|        |              | sigmas(3) &                | Appendix 8      |
|        | 3            |                            |                 |
|        | (1PE11.3,x), | data quality flags (4)     |                 |
|        | 4(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 8      | 4            | HILT fluxes (4),           | Appendix 7      |
|        | (1PE11.3,x), |                            |                 |
|        |              | sigmas (4) &               | Appendix 9      |
|        | 4            |                            |                 |
|        | (1PE11.3,x), | data quality flags (6)     |                 |
|        |              |                            |                 |
|        | 6(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 9      | 8            | MAST fluxes (8),           | Appendix 7      |
|        | (1PE11.3,x), |                            |                 |
|        |              | sigmas (8), &              | Appendix 10     |
|        | 8(1PE11.3,x) |                            |                 |
|        |              | data quality flags (3)     |                 |
|        | 3(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 10     | 3            | PET fluxes (3),            | Appendix 7      |
|        | (1PE11.3,x), |                            |                 |
|        |              | sigmas (3), &              | Appendix 11     |
|        | 3            |                            |                 |
|        | (1PE11.3,x), | data quality flags (3)     |                 |
|        |              |                            |                 |
|        | 3(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 11     | I3           | SAA flag                   | Appendix 2      |
+--------+--------------+----------------------------+-----------------+

Notes:

1\) \"x\" in above formats marks the location of comma separators of
data items

2\) total number of comma delimited items in one data record:

7 + 70 + 3 + 3 + 4 + 4 + 4 + 6 + 8 + 8 + 3 + 3 + 3 + 3 + 1 = 127

3\) \"fluxes\" are in units of particles/sec cm2 sr MeV/n

4\) \"sigmas\" are 1-standard deviation uncertainties based on counting
statistics *only.*

5\) Each file contains data for a single 24 hour period
(midnight-midnight UT).

6\) ISTP standard fill value for flux data: -1.000000E+31

## 2.3 polar cap count rate data records

The content of each ASCII data record of the polar cap count rate files
for each orbit is as given in the table 2.3. Each record in the file
corresponds to a single polar cap crossing, where the polar cap is
defined as times when the spacecraft is at an invariant latitude \>70°.
*Note: the spacecraft does not reach or exceed 70° on every orbit, so
some polar passes are not present.* The table includes references to
appendices that contain further detail on each item.

Table 2.3

Record Format for Polar Cap Count Rate files

+--------+--------------+----------------------------+-----------------+
| Item   | Format       | Description                | Reference       |
| \#     |              |                            |                 |
+--------+--------------+----------------------------+-----------------+
|        |              |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 1      | I10,x        | SAMPEX time at start of    | Appendix 1      |
|        |              | entry                      |                 |
+--------+--------------+----------------------------+-----------------+
| 2      | A24,x        | ISO time at start of cap   | Appendix 1      |
|        |              | entry                      |                 |
+--------+--------------+----------------------------+-----------------+
| 3      | A18,x        | MM/DD/YY HH:MM:SS          | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 4      | I10,x        | SAMPEX time at cap exit    | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 5      | A24,x        | ISO time at cap exit       | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 6      | A18,x        | MM/DD/YY HH:MM:SS          | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 7      | I3,x         | N/S polar cap flag         | see below       |
+--------+--------------+----------------------------+-----------------+
| 8      | 12           | LICA: 12 count & live time | Appendix 3      |
|        | (I10,x,I3,x) | pairs & 4 data quality     |                 |
|        |              | flags                      | Appendix 8      |
|        | 4(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 9      | 24           | HILT 24 count and live     | Appendix 4      |
|        | (I10,x,I3,x) | time pairs & 6 data        |                 |
|        |              | quality flags              | Appendix 9      |
|        | 6(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 10     | 78(I10,x,    | MAST 78 count and live     | Appendix 5      |
|        | I3,x)        | time pairs, & 3 data       |                 |
|        |              | quality flags              | Appendix 10     |
|        | 3(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 11     | 33(I10,x,    | PET count and live time    | Appendix 6      |
|        | I3,x)        | pairs, & 3 data quality    |                 |
|        |              | flags                      | Appendix 11     |
|        | 3(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+

Notes:

1\) \"x\" in above formats marks the location of comma separators of
data items

2\) total number of comma delimited items in one data record:

7 + 24 + 4 + 48 + 6 + 156 + 3 + 66 + 3 = 317

3\) \"count\" means the sum of accumulator counts

4\) \"live time\" is in seconds for each accumulator

5\) Polar cap flag: 1 = North Polar Cap; 0 = South Polar Cap.

6\) ISTP standard fill values for count data: -2147483648

## 2.4 polar cap flux data records

The content of each ASCII data record of the Polar Cap flux file is as
given in the table 2.2. Each record in the file corresponds to a single
polar cap crossing, where the polar cap is defined as times when the
spacecraft is at an invariant latitude \>70°. *Note: the spacecraft does
not reach or exceed 70° on every orbit, so some polar passes are not
present.* The table includes references to appendices that contain
further detail on each item.

Table 2.4

Record Format for Polar Cap Flux files

+--------+--------------+----------------------------+-----------------+
| Item   | Format       | Description                | Reference       |
| \#     |              |                            |                 |
+--------+--------------+----------------------------+-----------------+
|        |              |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 1      | I10,x        | SAMPEX time at start of    | Appendix 1      |
|        |              | entry                      |                 |
+--------+--------------+----------------------------+-----------------+
| 2      | A24,x        | ISO time at start of cap   | Appendix 1      |
|        |              | entry                      |                 |
+--------+--------------+----------------------------+-----------------+
| 3      | A18,x        | MM/DD/YY HH:MM:SS          | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 4      | I10,x        | SAMPEX time at cap exit    | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 5      | A24,x        | ISO time at cap exit       | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 6      | A18,x        | MM/DD/YY HH:MM:SS          | Appendix 1      |
+--------+--------------+----------------------------+-----------------+
| 7      | I3,x         | N/S polar cap flag         | see below       |
+--------+--------------+----------------------------+-----------------+
| 8      | 3            | LICA fluxes (3),           | Appendix 7      |
|        | (1PE11.3,x), |                            |                 |
|        |              | sigmas(3) &                | Appendix 8      |
|        | 3            |                            |                 |
|        | (1PE11.3,x), | data quality flags (4)     |                 |
|        | 4(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 9      | 4            | HILT fluxes (4),           | Appendix 7      |
|        | (1PE11.3,x), |                            |                 |
|        |              | sigmas (4) &               | Appendix 9      |
|        | 4            |                            |                 |
|        | (1PE11.3,x), | data quality flags (6)     |                 |
|        |              |                            |                 |
|        | 6(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 10     | 8            | MAST fluxes (8),           | Appendix 7      |
|        | (1PE11.3,x), |                            |                 |
|        |              | sigmas (8), &              | Appendix 10     |
|        | 8(1PE11.3,x) |                            |                 |
|        |              | data quality flags (3)     |                 |
|        | 3(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+
| 11     | 3            | PET fluxes (3),            | Appendix 7      |
|        | (1PE11.3,x), |                            |                 |
|        |              | sigmas (3), &              | Appendix 11     |
|        | 3            |                            |                 |
|        | (1PE11.3,x), | data quality flags (3)     |                 |
|        |              |                            |                 |
|        | 3(I3,x)      |                            |                 |
+--------+--------------+----------------------------+-----------------+

Notes:

1\) \"x\" in above formats marks the location of comma separators of
data items

2\) total number of comma delimited items in one data record:

7 + 3 + 3 + 4 + 4 + 4 + 6 + 8 + 8 + 3 + 3 + 3 + 3 = 59

3\) \"fluxes\" are in units of particles/sec cm2 sr MeV/n

4\) \"sigmas\" are 1-standard deviation uncertainties based on counting
statistics *only.*

5\) Polar cap flag: 1 = North Polar Cap; 0 = South Polar Cap.

6\) ISTP standard fill value for flux data: -1.000000E+31

# Appendix 1 - TIME formats

The files use 3 different time formats, which are useful for different
applications.

**[1) SAMPEX time:]{.underline}**

SAMPEX time is: seconds since 01 JAN 1992 00:00:00 (UT)

**[2) ISO time;]{.underline}**

ISO time is a 24 character string with format: yyyy-mm-ddThh:mm:ssbbbbb

where: T = tab; b = blank

Variation A, ISO 8601, Reference:

CCSDS 301.0-B-2 (Blue Book), Issue 2, April 1990

Consultative Committee for Space Data Systems

Communications and Data Systems Division (Code OS)

National Aeronautics and Space Administration

Washington, DC 20546

**[3) MM/DD/YY HH:MM:SS format]{.underline}**

This format is recognized by commercial software packages such as
Kaleidagraph.

# Appendix 2 - Position and Magnetic Field Data 

The Position and Magnetic Field Data section contains spacecraft
position and velocity in inertial coordinates, position in geographic
and magnetic coordinates, spacecraft attitude, zenith and azimuth look
angles, and model magnetic field parameters. All magnetic field data is
calculated from a model (see below). Calculated parameters correspond to
the start time of each bin.

## Appendix 2.1 Models

The IGRF 1990 Model is used. Values are calculated with a subroutine
BL_IGRF written by: Mike NcNab of the Aerospace Corporation. This same
subroutine is used in the SAMPEX Level-1 (MDF) files.

## Appendix 2.2 Dynamic Integration Step Size

The integration step size used in the magnetic field model numerical
integration routine is dynamically adjustable as a function of the
L-shell parameter. For L-shell values of 10 or greater the step size is
500. For L-shell values less than 10, the step size is 100. The purpose
of this is to achieve good accuracy for L \< 10 while reducing
calculation time for L ≥ 10 where the model is less accurate.

## Appendix 2.3 Detailed Point Descriptions

Table A-2.3 - Detailed Position/Mag Field Data Description

+------+-----------+------------------+-------------------------------+
| Item | Format    | Name             | Description                   |
+------+-----------+------------------+-------------------------------+
| 1    | I10,x     | SAMPEX Time      | Time (seconds since 01Jan92   |
|      |           |                  | 00:00:00) of current 6-second |
|      |           |                  | MDF bin.                      |
+------+-----------+------------------+-------------------------------+
| 2    | A24,x     | ISO time         | ISO time, Variation A, ISO    |
|      |           |                  | 8601                          |
|      |           |                  |                               |
|      |           |                  | (yyyy-mm-ddThh:mm:ssbbbbb)    |
+------+-----------+------------------+-------------------------------+
| 3    | A18,x     | MM/DD/YY         | Date and time in a form       |
|      |           | HH:MM:SS         | usable by commercial packages |
|      |           |                  | such as Kaleidagraph          |
+------+-----------+------------------+-------------------------------+
| 4    | I8,x      | Orbit \#         | Current orbit number. Launch  |
|      |           |                  | into orbit 1. Orbit 2 starts  |
|      |           |                  | at first ascending node       |
|      |           |                  | through geographic equatorial |
|      |           |                  | plane.                        |
+------+-----------+------------------+-------------------------------+
| 5    | I3,x      | MDF_sw_no        | Software version number for   |
|      |           |                  | MDF Generator.                |
+------+-----------+------------------+-------------------------------+
| 6    | I3,x      | BL_IGRF_sw_no    | Software version number for   |
|      |           |                  | routine BL_IGRF (does         |
|      |           |                  | magnetic field calculations)  |
+------+-----------+------------------+-------------------------------+
| 7    | I3,x      | Mag_Eph_sw_no    | Software version number for   |
|      |           |                  | magnetic ephemeris library.   |
+------+-----------+------------------+-------------------------------+
| 8    | 3(1       | GEO_POS          | Geographic position; range    |
|      | PE11.3,x) |                  | (km), longitude (0° to 360°), |
|      |           |                  | latitude (-90° to +90°)       |
+------+-----------+------------------+-------------------------------+
| 9    | 1PE11.3,x | GEO_ALT          | Geographic altitude (km).     |
+------+-----------+------------------+-------------------------------+
| 10   | 3(1       | GEI_POS          | X,Y,Z of spacecraft (km) in   |
|      | PE11.3,x) |                  | Geocentric Equatorial         |
|      |           |                  | Inertial coordinates          |
|      |           |                  | (identical to ECI             |
|      |           |                  | coordinates).                 |
+------+-----------+------------------+-------------------------------+
| 11   | 3(1       | GEI_VEL          | VX,VY,VZ velocities (km/s) in |
|      | PE11.3,x) |                  | GEI coordinates               |
+------+-----------+------------------+-------------------------------+

continued

Table A-2.3 - Detailed Position/Mag Field Data Description

(continued)

+------+-----------+------------------+-------------------------------+
| Item | Format    | Point Name       | Description                   |
+------+-----------+------------------+-------------------------------+
| 12   | 9(1       | Direction Cosine | 9-element direction cosine    |
|      | PE11.3,x) | Array            | array for rotating from GEI   |
|      |           |                  | coordinates to body fixed     |
|      |           |                  | coordinates. Z-axis in body   |
|      |           |                  | fixed is along instrument     |
|      |           |                  | bore sights. Order of         |
|      |           |                  | elements is A(1,1), A(2,1),   |
|      |           |                  | A(3,1), A(1,2), A(2,2),       |
|      |           |                  | A(3,2), A(1,3), A(2,3),       |
|      |           |                  | A(3,3).                       |
+------+-----------+------------------+-------------------------------+
| 13   | 1PE11.3,x | Exo_temp         | Exospheric temperature        |
|      |           |                  | (Kelvin) used in orbit        |
|      |           |                  | propagation code.             |
+------+-----------+------------------+-------------------------------+
| 14   | 1PE11.3,x | Drag             | Drag scaling factor used in   |
|      |           |                  | orbit propagation;            |
|      |           |                  |                               |
|      |           |                  | Drag factor = (1+drag)\*2.2   |
+------+-----------+------------------+-------------------------------+
| 15   | 1PE11.3,x | Geomag_index     | Geomagnetic activity index    |
|      |           |                  | used in orbit propagation.    |
+------+-----------+------------------+-------------------------------+
| 16   | 3(1       | ECD_pos          | Eccentric Dipole (offset      |
|      | PE11.3,x) |                  | tilted dipole) range (km),    |
|      |           |                  | longitude (0° to 360°),       |
|      |           |                  | latitude (-90° to +90°) of    |
|      |           |                  | spacecraft.                   |
+------+-----------+------------------+-------------------------------+
| 17   | 1PE11.3,x | ECD_LT           | Local time in ECD (hr).       |
+------+-----------+------------------+-------------------------------+
| 18   | 1PE11.3,x | L                | L-shell parameter             |
+------+-----------+------------------+-------------------------------+
| 19   | 1PE11.3,x | Bmag             | Model field magnitude (gauss) |
+------+-----------+------------------+-------------------------------+
| 20   | 1PE11.3,x | MLT              | Local time at magnetic        |
|      |           |                  | equator (hr) ECD              |
+------+-----------+------------------+-------------------------------+
| 21   | 1PE11.3,x | Invlat           | Invariant latitude (degrees)  |
+------+-----------+------------------+-------------------------------+

continued

Table A-2.3 - Detailed Position/Mag Field Data Description

(continued)

+------+-----------+------------------+-------------------------------+
| Item | Format    | Point Name       | Description                   |
+------+-----------+------------------+-------------------------------+
| 22   | 1PE11.3,x | Pitch            | Pitch angle of particle       |
|      |           |                  | entering on instrument center |
|      |           |                  | line (angle between B and     |
|      |           |                  | spacecraft minus Z direction) |
|      |           |                  | (degrees)                     |
+------+-----------+------------------+-------------------------------+
| 23   | 1PE11.3,x | Losscone1        | Loss cone 1/2 angle (degrees) |
|      |           |                  | for particles mirroring below |
|      |           |                  | 100 km in same hemisphere as  |
|      |           |                  | spacecraft.                   |
+------+-----------+------------------+-------------------------------+
| 24   | 1PE11.3,x | Losscone2        | Smaller of the two loss cone  |
|      |           |                  | 1/2 angles (degrees) for      |
|      |           |                  | particles mirroring below 100 |
|      |           |                  | km in either hemisphere.      |
+------+-----------+------------------+-------------------------------+
| 25   | 3(1       | Bvec_GEI         | Magnetic field vector,        |
|      | PE11.3,x) |                  | Cartesian GEI coordinates.    |
+------+-----------+------------------+-------------------------------+
| 26   | 3(1       | Bvec_GEO         | Magnetic field vector,        |
|      | PE11.3,x) |                  | spherical geographic          |
|      |           |                  | coordinates (r, theta, phi).  |
+------+-----------+------------------+-------------------------------+
| 27   | 3(1       | Dipole_moment    | Dipole moment vector.         |
|      | PE11.3,x) |                  | Cartesian geographic          |
|      |           |                  | coordinates.                  |
+------+-----------+------------------+-------------------------------+
| 28   | 3(1       | Displacement     | Dipole moment displacement    |
|      | PE11.3,x) |                  | vector. Cartesian geographic  |
|      |           |                  | coordinates.                  |
+------+-----------+------------------+-------------------------------+
| 29   | 1PE11.3,x | Declination      | Magnetic declination          |
|      |           |                  | (degrees).                    |
+------+-----------+------------------+-------------------------------+
| 30   | 1PE11.3,x | Dip              | Magnetic dip angle (degrees)  |
+------+-----------+------------------+-------------------------------+
| 31   | 1PE11.3,x | MagRad           | Algebraic magnetic radial     |
|      |           |                  | distance (km).                |
|      |           |                  |                               |
|      |           |                  | Note A.                       |
+------+-----------+------------------+-------------------------------+
| 32   | 1PE11.3,x | MagLat           | Algebraic magnetic latitude   |
|      |           |                  | (degrees)                     |
|      |           |                  |                               |
|      |           |                  | Note A.                       |
+------+-----------+------------------+-------------------------------+

continued

Table A-2.3 - Detailed Position/Mag Field Data Description

(continued)

+------+-----------+------------------+-------------------------------+
| Item | Format    | Point Name       | Description                   |
+------+-----------+------------------+-------------------------------+
| 33   | 3(1       | Mirror           | Geographic altitude (km),     |
|      | PE11.3,x) |                  | longitude (degrees), latitude |
|      |           |                  | (degrees) of mirror point     |
|      |           |                  | (where B is same as B at      |
|      |           |                  | spacecraft).                  |
+------+-----------+------------------+-------------------------------+
| 34   | 4(1       | Equatorial       | Magnitude of field (gauss)    |
|      | PE11.3,x) |                  | and GEO altitude (km),        |
|      |           |                  | longitude (degrees), latitude |
|      |           |                  | (degrees) at magnetic         |
|      |           |                  | equator.                      |
+------+-----------+------------------+-------------------------------+
| 35   | 4(1       | North100         | Magnitude of field (gauss)    |
|      | PE11.3,x) |                  | and GEO altitude (km),        |
|      |           |                  | longitude (degrees), latitude |
|      |           |                  | (degrees) at north 100 km     |
|      |           |                  | point.                        |
|      |           |                  |                               |
|      |           |                  | Note B.                       |
+------+-----------+------------------+-------------------------------+
| 36   | 4(1       | South100         | Magnitude of field (gauss)    |
|      | PE11.3,x) |                  | and GEO altitude (km),        |
|      |           |                  | longitude (degrees), latitude |
|      |           |                  | (degrees) at south 100 km     |
|      |           |                  | point.                        |
|      |           |                  |                               |
|      |           |                  | Note B.                       |
+------+-----------+------------------+-------------------------------+
| 37   | 1PE11.3,x | Cutoff           | Nominal vertical cutoff       |
|      |           |                  | (1980) at 20 km altitude at   |
|      |           |                  | subsatellite location (GV).   |
|      |           |                  |                               |
|      |           |                  | (Shea and Smart, 1983,        |
|      |           |                  | Bangalore ICRC, Paper         |
|      |           |                  | MG10-3).                      |
+------+-----------+------------------+-------------------------------+
| 38   | I3,x      | SAAF             | South Atlantic Anomaly Flag.  |
|      |           |                  |                               |
|      |           |                  | 0=not in SAA                  |
|      |           |                  |                               |
|      |           |                  | 1=within SAA                  |
+------+-----------+------------------+-------------------------------+
| 39   | 1PE11.3,x | Zenith           | Angle (0° to 180°) between    |
|      |           |                  | zenith and spacecraft z-axis  |
|      |           |                  | (instrument bore sight).      |
+------+-----------+------------------+-------------------------------+
| 40   | 1PE11.3,x | Azimuth          | Direction of projection of    |
|      |           |                  | spacecraft z-axis in plane    |
|      |           |                  | perpendicular to radial       |
|      |           |                  | direction.                    |
|      |           |                  |                               |
|      |           |                  | 0=east, 90=north, 180=west,   |
|      |           |                  | 270=south                     |
+------+-----------+------------------+-------------------------------+

Table A-2.3 - Detailed Position/Mag Field Data Description

(continued)

+------+-----------+------------------+-------------------------------+
| Item | Format    | Point Name       | Description                   |
+------+-----------+------------------+-------------------------------+
| 41   | I2,x      | Control mode     | ACS control mode indicator.   |
|      |           |                  |                               |
|      |           |                  | 0=SUNPOINT                    |
|      |           |                  |                               |
|      |           |                  | 1=MAGCAL                      |
|      |           |                  |                               |
|      |           |                  | 2=ORBIT ROTATION (normal      |
|      |           |                  | mode)                         |
|      |           |                  |                               |
|      |           |                  | 3=COAST (see **MDF**          |
|      |           |                  | document, page 47)            |
+------+-----------+------------------+-------------------------------+
| 42   | 1         | Inertial Dot     | Inertial dot product between  |
|      | PE11.3,x, | Product          | unit sun vector and unit      |
|      |           |                  | B-vector.                     |
+------+-----------+------------------+-------------------------------+

[Note A:]{.underline} Algebraic radius and latitude are computed using
the dipole relationship between B, L, and latitude but with values for B
and L generated from the IGRF model.

[Note B:]{.underline} The 100-km points are the locations where the
magnetic field line going through the spacecraft reaches an altitude of
100 km (a typical altitude for particle loss). These points are
determined numerically, not analytically, so the computed values are
step-size dependent. The altitude is included with the longitude and
latitude to provide the user with a measure of how close the computed
position is to the ideal.

## Appendix 2.4 SAA FLAG 

The SAA flag is set = 1 when SAMPEX is on or within the ellipse defined
below. This area is centered approximately on the South Atlantic
Anomaly.

The flag is set = 0 when SAMPEX is outside this ellipse.

Equation of ellipse:

![](media/image3.wmf){width="1.9861111111111112in" height="0.44375in"}

Where:

a = -27.5°

b = -22.5°

c = 32.5°

d = 70.0°

lat = geographic latitude (-90° to +90°)

long = east geographic longitude (-180° to +180°)

Parameters a,b,c,d are chosen to approximately fit the contour of \>3
MeV protons at 10 cm-2 s-1 at 600 km altitude as specified in NASA SP
3054 (1970).

## Appendix 2.5 Spacecraft Pointing Programs

The SAMPEX spacecraft is three-axis stabilized. Pointing is under
control of the on-board attitude control system, as described in more
detail in [An Overview of the Solar, Anomalous, and Magnetospheric
Particle Explorer (SAMPEX) Mission,]{.underline} D. N. Baker, G. M.
Mason, O. Figueroa, G. Colon, J. G. Watzin, and R. M. Aleman, IEEE
Transactions on Geoscience and Remote Sensing, Vol. 31, No., 3, May
1993, p 531. (see also SAMPEX WWW page).

The pointing program was modifiable, and could be changed to optimize
different science studies. As of this writing (Feb. 1996), the bulk of
the mission has been spend in two modes, described in Appendices 2.5.1
and 2.5.2. A third pointing program was under test in February 1996 and
may be used in the future. Other programs might be developed for new
studies.

### 2.5.1 Original Pointing Program

This program was in use from launch (7/3/92) until 5/26/94 13:46:28 UT

• Pitch axis (normal to solar panels) points directly at sun always

• Yaw axis (detector boresight direction) rotates once per orbit, and
points north over the north pole, south over the south pole; parallel to
equator at equatorial plane crossings.

• Yaw axis pointing avoids ram direction to protect sensor thin windows.

### 2.5.2 Trapped ACR Optimized Pointing Program

This program was put into use on 5/26/94 13:46:28 UT. It is a
modification of the original program that optimizes observations of
trapped particles near the equator.

• Pitch axis (normal to solar panels) points directly at sun always

• Yaw axis (detector boresight direction) points as close as allowed by
other constraints:

> \(a\) parallel to magnetic field for B \> 0.3 gauss;
>
> \(b\) perpendicular to magnetic field for B \< 0.3 gauss.

• Yaw axis (detector boresight direction) rotates once per orbit, and
points north over the north pole, south over the south pole; parallel to
equator at equatorial plane crossings.

• Yaw axis pointing avoids ram direction to protect sensor thin windows.

### 2.5.3 Experimental 1 RPM Pointing Program

This program had several test runs beginning February 1, 1996. Use
beyond the initial test runs is being considered by the SAMPEX science
team. On possibility being considered is alternating several weeks of
the 1 RPM program with the Trapped ACR program. Program description:

• Pitch axis (normal to solar panels) points directly at sun always

• Yaw axis (detector boresight direction) rotates at 1 RPM.

# 

# Appendix 3 - LICA count rates

The 12 LICA Count Rates are described in Table A-3.1. The rates are all
unmultiplexed, and all read out to the DPU every 6 seconds.

Table A-3.1 LICA Rates

  -------- ---------------- -------------------------------- -------------
  *Rate    *Rate Acronym*   *Rate Description*               *Live time %*
  \#*                                                        

  1        D1               All ions & e-, \>800 keV H;      100%
                            \>600 e-                         

  2        D2               All ions & e-, \>800 keV H;      \"
                            \>600 e-                         

  3        D3               All ions & e-, \>800 keV H;      \"
                            \>600 e-                         

  4        D4               All ions & e-, \>800 keV H;      \"
                            \>600 e-                         

  5        Triples (VSE)    All ions, 0.8-6.0 MeV H          \"

  6        Doubles (VS)     All ions, \>250 keV H            \"

  7        START            All ions & e-, \>250 keV H; \>30 \"
                            keV e-                           

  8        STOP             All ions & e-, \>250 keV H; \>30 \"
                            keV e-                           

  9        IFC              In flight calibrator (not a      \"
                            particle rate)                   

  10       Lo Priority      He, 0.5-6.6 MeV/nuc              \"

  11       Hi Priority      Z\>2 ions, 0.49-8.3 MeV/nuc      \"

  12       Protons          H, 0.8-6 MeV                     \"
  -------- ---------------- -------------------------------- -------------

Note: "e-" denotes electrons

# Appendix 4 - HILT count rates

The 24 HILT Count Rates are described in Table A-4.1.

Table A-4.1 HILT Count Rates

  -------- ---------------- -------------------------------- -------------
  *Rate    *Rate Acronym*   *Rate Description*               *Live time %*
  \#*                                                        

  1        HE1              4.3 - 9 MeV/nuc He               100

  2        HE2              9.0 - 30 MeV/nuc He              \"

  3        HZ1              Z≥6, 8.2 - 42 MeV/nuc for Oxygen \"

  4        HZ2              42 - 220 MeV/nuc Z≥6             \"

  5        SSD1             \>5 MeV/nuc Z≥1                  25%

  6        SSD2             \>5 MeV/nuc Z≥1                  \"

  7        SSD3             \>5 MeV/nuc Z≥1                  \"

  8        SSD4             \>5 MeV/nuc Z≥1                  \"

  9        STROBE           Z≥1 (\>2.5 MeV for H)            12.5%

  10       PCFE             Front proportional counter Z≥1   \"
                            (\>2.5 MeV for H)                

  11       IK               Z≥2 (\>3 MeV/nuc for He)         \"

  12       CSI              Cesium Iodide Z≥1 (\>22 MeV for  \"
                            H)                               

  13       PCRE             Rear proportional counter        \"

  14       NO               diagnostic engineering rate      \"

  15       PILEUP           sensor diagnostic rate           \"

  16       INVARR           Invalid array - (sensor          \"
                            diagnostic)                      

  17       IDLEHI           Idle high (live time)            100

  18       IDLELO           Idle low (live time)             \"

  19       *varies*         *see Table A4.2 (a.,b\...)       \"
                            below*                           

  20       \"               \"                               \"

  21       \"               \"                               \"

  22       \"               \"                               \"

  23       \"               \"                               \"

  24       \"               \"                               \"
  -------- ---------------- -------------------------------- -------------

*IMPORTANT NOTE:* The accumulator totals for rates 1-2 (HE1, HE2, HZ1,
HZ2) are corrected to reflect deadtime, proportional counter gain
changes, and background level. With this correction made, the HILT Rates
1-4 accumulator totals in the Count Rate files are then used directly to
calculate the HILT fluxes taking account of time coverage, energy range,
and geometrical factors.

The HILT high resolution rate accumulators are assigned by the DPU, and
can be changed by modifying the DPU bootlist. In Table A-4.1, the high
resolution rates are identified only by slot number. The contents of the
slots are given below in Table A-4.2(a) and subsequent versions. For
additional details of the operation, contact Dr. J. B. Blake, Aerospace
Corporation, El Segundo, CA (DIRAC2::BLAKE).

Table A-4.2(a) HILT high resolution count rates

for the time period: launch through 3/25/94 19:09:59 (day 84)

  -------- ---------------- -------------------------------- -------------
  *Rate    *Rate Acronym*   *Rate Description*               *frequency*
  \#*                                                        

  19       HSSD1            \>5 MeV/nuc Z≥1                  100 ms

  20       HSSD2            \>5 MeV/nuc Z≥1                  \"

  21       HSSD3            \>5 MeV/nuc Z≥1                  \"

  22       HSSD4            \>5 MeV/nuc Z≥1                  \"

  23       HIK              predominantly 3-9 MeV/nuc He     \"

  24       HPCRE            Rear proportional counter        \"
  -------- ---------------- -------------------------------- -------------

Table A-4.2(b) HILT high resolution count rates

for the time period: 3/25/94 19:09:59 (day 84) to 8/25/94 21:00:34 (day
327)

  -------- ---------------- -------------------------------- -------------
  *Rate    *Rate Acronym*   *Rate Description*               *frequency*
  \#*                                                        

  19       HSSD1            \>5 MeV/nuc Z≥1                  20ms

  20       HSSD1            \>5 MeV/nuc Z≥1                  \"

  21       HSSD1            \>5 MeV/nuc Z≥1                  \"

  22       HSSD4            \>5 MeV/nuc Z≥1                  100 ms

  23       HSSD1            \>5 MeV/nuc Z≥1                  20 ms

  24       HSSD1            \>5 MeV/nuc Z≥1                  \"
  -------- ---------------- -------------------------------- -------------

Table A-4.2(c) HILT high resolution count rates

for the time period: 8/25/94 21:00:34 (day 237) - 2/1/95.

  -------- ---------------- -------------------------------- -------------
  *Rate    *Rate Acronym*   *Rate Description*               *frequency*
  \#*                                                        

  19       HSSD1            \>5 MeV/nuc Z≥1                  30 ms

  20       HPCRE            Rear proportional counter        \"

  21       HSSD1            \>5 MeV/nuc Z≥1                  \"

  22       HPCRE            Rear proportional counter        \"

  23       HPCRE            Rear proportional counter        \"

  24       HSSD1            \>5 MeV/nuc Z≥1                  \"
  -------- ---------------- -------------------------------- -------------

# Appendix 5 - MAST count rates

The 78 MAST count rates are described in Table A-5.1.

Table A-5.1 MAST Rates

  ------- ---------- ------------------------------------------ ------------
  *Rate   *Rate      *Rate Description*                         *Subcom*
  \#*     Acronym*                                              

  1       Z1SEC      OR of Z1R0, R1, R2 (almost all proton      All
                     chance coincidences)                       

  2       ADCOR      Trigger of any ADC; protons \>\~3 MeV,     All
                     detector noise                             

  3       LIVE       Live time pulser; 732 counts/6 seconds =   All
                     99.7%                                      

  4       PEN        Mostly CNO \> \~150 MeV/nuc                All

  5       Z1         Almost all proton chance coincidences      All

  6       Z2         He 8-15 MeV/nuc (5-15 in some periods)     All

  7       HIZR0      Z ≥ 6, 17-19.5 MeV/nuc for O (14.5-19.5    All
                     for some periods)                          

  8       HIZR1      Z ≥ 6, 19.5 - 23 MeV/n Oxygen 12.5 cm2 sr  All

  9       HIZR2      Z ≥ 6, 23 - 31.1 MeV/n Oxygen 12.5 cm2 sr  All

  10      HIZR3      Z ≥ 6, 31.1 - 51.9 MeV/n Oxygen 12.2 cm2   All
                     sr                                         

  11      HIZR4      Z ≥ 6, 51.9 - 76.5 MeV/n Oxygen 11.7 cm2   All
                     sr                                         

  12      HIZR5      Z ≥ 6, 76.5 - 113 MeV/n Oxygen 10.2 cm2 sr All

  13      HIZR6      Z ≥ 6, 113 - 156 MeV/n Oxygen 8.1 cm2 sr   All

  14      Rate 17    M1XSA: M1 Z2-level discriminator           6

  15      Rate 17    M1XSB: M1 HIZ level discriminator          7

  16      Rate 17    M2YSA: M2 Z2-level discriminator           8

  17      Rate 17    M2YSB: M2 HIZ level discriminator          9

  18      Rate 17    M3XSA: M3 Z2-level discriminator           10

  19      Rate 17    M3XSB: M3 HIZ level discriminator          11

  20      Rate 17    M4YSA: M4 Z2-level discriminator           12

  21      Rate 17    M4YSB: M4 HIZ level discriminator          13

  22      Rate 17    D1A: D1 Z2-level discriminator             14

  23      Rate 17    D1B: D1 HIZ level discriminator            15

  24      Rate 17    D2A: D2 Z2-level discriminator             16

  25      Rate 17    D2B: D2 HIZ level discriminator            17

  26      Rate 17    D3A: D3 Z2-level discriminator             18

  27      Rate 17    D3B: D3 HIZ level discriminator            19

  28      Rate 17    D4A: D4 Z2-level discriminator             20

  29      Rate 17    D4B: D4 HIZ level discriminator            21

  30      Rate 16    M1X1: M1 position ADC trigger              6

  31      Rate 16    M1XS: M1 ADC trigger                       7

  32      Rate 16    M2Y1: M2 position ADC trigger              8

  33      Rate 16    M2YS: M2 ADC trigger                       9

  34      Rate 16    M3X1: M3 position ADC trigger              10

  35      Rate 16    M3XS: M3 ADC trigger                       11

  36      Rate 16    M4Y1: M4 position ADC trigger              12

  37      Rate 16    M4YS: M4 ADC trigger                       13

  38      Rate 16    D1: D1 ADC trigger                         14

  39      Rate 16    D2: D2 ADC trigger                         15

  40      Rate 16    D3: D3 ADC trigger                         16

  41      Rate 16    D4: D4 ADC trigger                         17

  42      Rate 16    D5: D5 ADC trigger                         18

  43      Rate 16    D6: D6 ADC trigger                         19

  44      Rate 16    G1: Low-level anticoincidence guard        20

  45      Rate 16    G2: High-level anticoincidence guard       21

  46      Rate 18    D7: D7 discriminator                       6

  47      Rate 18    G35L: LL anticoincidence guard D3 or D5    7

  48      Rate 18    G35H: HL anticoincidence guard D3 or D5    8

  49      Rate 18    G47L: LL anticoincidence guard D4 or D7    9

  50      Rate 18    G47H: HL anticoincidence guard D4 or D7    10

  51      Rate 18    G6L: LL anticoincidence guard D6           11

  52      Rate 18    G6H: HL anticoincidence guard D6           12

  53      Rate 18    HAZ: ADC trigger close to previous ADC     13
                     trigger                                    

  54      Rate 18    D5A: D5 Z2-level discriminator             14

  55      Rate 18    D5B: D5 HIZ-level discriminator            15

  56      Rate 18    D6A: D6 Z2-level discriminator             16

  57      Rate 18    D6B: D6 HIZ-level discriminator            17

  58      Rate 18    M12: Logical AND of M1 & M2                18

  59      Rate 18    M34: AND of M3 & M4 (=M3 in certain        19
                     periods)                                   

  60      Rate 18    L: OR of Z2-level discriminators           20

  61      Rate 18    H: OR of HIZ-level discriminators          21

  62      Z1R        Z1R0: Nominal stop in M4 (or M3 in certain 6,13,14,21
                     periods)                                   

  63      Z1R        Z1R1: Nominal proton stop in D1 (mostly    7,15
                     chance coinc.)                             

  64      Z1R        Z1R2: Nominal proton stop in D2 (mostly    8,16
                     chance coinc.)                             

  65      Z1R        Z1R3: Nominal proton stop in D3 (mostly    9,17
                     chance coinc.)                             

  66      Z1R        Z1R4: Nominal proton stop in D4 (mostly    10,18
                     chance coinc.)                             

  67      Z1R        Z1R5: Nominal proton stop in D5 (mostly    11,19
                     chance coinc.)                             

  68      Z1R        Z1R6: Nominal proton stop in D6 (mostly    12,20
                     chance coinc.)                             

  69      Z1R        Z1R1: Nominal proton stop in D1 (mostly    13,21
                     chance coinc.)                             

  70      Z2R        Z2R0: Prob. He stop in M4 (or M3 in        6,13,14,21
                     certain periods)                           

  71      Z2R        Z2R1: Probable He stop in D1               7,15

  72      Z2R        Z2R2: Probable He stop in D2               8,16

  73      Z2R        Z2R3: Probable He stop in D3               9,17

  74      Z2R        Z2R4: Nominal He stop in D4 (mostly chance 10,18
                     coinc.)                                    

  75      Z2R        Z2R5: Nominal He stop in D5 (mostly chance 11,19
                     coinc.)                                    

  76      Z2R        Z2R6: Nominal He stop in D6 (mostly chance 12,20
                     coinc.)                                    

  77      Z2R        Z2R0: Prob. He stop in M4 (or M3 in        13,21
                     certain periods)                           

  78      HIZSUM     OR of HIZRx                                All
  ------- ---------- ------------------------------------------ ------------

# Appendix 6 - PET count rates

The 33 PET count rates are described in Table A-6.1

Table A-6.1 PET Count Rates

  ------- --------------- -------------------------------------- ----------
  *Rate   *Rate Acronym*  *Rate Description*                     *Subcom*
  \#*                                                            

  1       PHI             Protons 28-60 MeV (sometimes no upper  All
                          limit) 1.5 cm2 sr                      

  2       EHI             Electrons 4-15 MeV (sometimes no upper All
                          limit) 1.5 cm2 sr                      

  3       PLE             Protons 19-28 MeV (some periods = P1A) All
                          1.65 cm2 sr                            

  4       ELO             Electrons 2-6 MeV (some periods =      All
                          P1ADC) 1.65 cm2 sr                     

  5       EWG             Electrons wide geometry 4-30 MeV       All
                          (sometimes no upper limit)             

  6       LIVE            Live time pulser 732/6 seconds = 99.7% All

  7       PEN             Protons \> 85 MeV, Electrons \> 30 MeV All
                          0.25 cm2 sr                            

  8       RNG             Protons \> 60 MeV, electrons \> 15 MeV All
                          0.4 cm2 sr                             

  9       MUX1            P1ADC: electrons \> 400 keV, protons   6, 14
                          \> \~2 MeV                             

  10      MUX1            ADC OR: Any ADC trigger, electrons \>  7,1 5
                          400 keV, protons \> \~2 MeV            

  11      MUX1            P2ADC: electrons \> \~800 keV, protons 8, 16
                          \> \~25 MeV                            

  12      MUX1            AL: low level anticoincidence trigger  9, 17

  13      MUX1            P3ADC: Electrons \> \~3 MeV, protons   10, 18
                          \> \~25 MeV                            

  14      MUX1            AH: High-level anticoincidence trigger 11, 19

  15      MUX1            P47ADC: He \~75-90 MeV/nuc             12, 20

  16      MUX1            HAZ: ADC trigger close to previous ADC 13, 21
                          trigger                                

  17      MUX2            P4 discriminator, Electrons \> 15 MeV, 6
                          H, He \> 60 MeV/nuc                    

  18      MUX2            P5 discriminator, Electrons \> 18 MeV, 7
                          H, He \> 64 MeV/nuc                    

  19      MUX2            P6 discriminator, Electrons \> 22 MeV, 8
                          H, He \> 70 MeV/nuc                    

  20      MUX2            P7 discriminator, Electrons \> 26 MeV, 9
                          H, He \> 77 MeV/nuc                    

  21      MUX1            P8 discriminator, Electrons \> 30 MeV, 10
                          H, He \> 85 MeV/nuc                    

  22      MUX1            A3L: Low-level anticoincidence guard   11
                          on P3                                  

  23      MUX1            A3H: High-level anticoincidence guard  12
                          on P3                                  

  24      MUX1            A4L: Low-level anticoincidence guard   13
                          on P4                                  

  25      MUX1            A4H: High-level anticoincidence guard  14
                          on P4                                  

  26      MUX1            A57L: Low-level anticoincidence guard  15
                          on P5 or P7                            

  27      MUX1            A57H: High-level anticoincidence guard 16
                          on P5 or P7                            

  28      MUX1            A68L: Low-level anticoincidence guard  17
                          on P6 or P8                            

  29      MUX1            A68H: High-level anticoincidence guard 18
                          on P6 or P8                            

  30      MUX1            P1A: Proton-level disc. on P1; H, He,  19
                          some electrons \> 4 MeV                

  31      MUX1            P3A: P3 low-level discriminator        10

  31      MUX1            P3B: P3 high-level discriminator       11

  33      RLEHE           Ratio of ELO to EHI fluxes             All
  ------- --------------- -------------------------------------- ----------

#  

# Appendix 7 - Fluxes (LICA, HILT, MAST, PET) 

The fluxes from all instruments are described in Table A-7.1.

Table A-7.1 Fluxes

  ---------- ------------ ----------------- --------------- ---------- ----------
  *Flux      *Rate*       *Energy Range*    *Dominant       *Geom.     *Saturat
  item*                                     Particle*       Factor     ion Flag*
                                                            (cm2sr)*   

  LICA 1     SSD          \>0.8 MeV \>0.6   Ions and e-     0.64       SSD sum \>
                          MeV                                          104 /s

  LICA 1     LoPriority   0.5-6.6 MeV/n     Z ≥ 1 (Mainly   0.58       Start MCP
                                            Helium)                    \> 104 /s

  LICA 3     HiPriority   0.49-8.3 MeV/n    Z ≥ 6           0.58       Stop MCP
                                                                       \> 104 /s

                                                                       

  HILT 1     HE1          4-9 MeV/n         Helium          60.0       See notes

  HILT 1     HE1          9-38 MeV/n        Helium          60.0       \"

  HILT 3     HZ1          8.1-41 MeV/n      Z ≥ 6           60.0       \"

  HILT 4     HZ1          41-110 MeV/n      Z ≥ 6           60.0       \"

                                                                       

  MAST 1     M12          5-11 MeV          Z ≥ 1 (Mainly   6.6        ADC \> 1
                                            Protons)                   x104 /s

  MAST 1     Z1           8-15 MeV/n        Helium          10         \"

  MAST 3     HIZR1        19.3-11.8 MeV/n   Z ≥ 6           11.5       \"

  MAST 4     HIZR1        11.8-31.0 MeV/n   Z ≥ 6           11.5       \"

  MAST 5     HIZR3        31.0-51.7 MeV/n   Z ≥ 6           11.1       \"

  MAST 6     HIZR4        51.7-76.1 MeV/n   Z ≥ 6           11.7       \"

  MAST 7     HIZR5        76.1-113 MeV/n    Z ≥ 6           10.1       \"

  MAST 8     HIZR6        113-156 MeV/n     Z ≥ 6           8.1        \"

                                                                       

  PET 1      ELO          1-6 MeV           e-              0.8        P1HI \>
                                                                       104 /s

  PET 1      EHI          3-16 MeV          e-              1.1        \"

  PET 3      PLO          19-18 MeV/n       Z ≥ 1 (Mainly   1.8        \"
                                            Protons)                   
  ---------- ------------ ----------------- --------------- ---------- ----------

Notes: Z\>1 energy ranges are for oxygen.

Flux 1-σ standard uncertainties due to statistics (
![](media/image4.wmf){width="0.5277777777777778in"
height="0.2222222222222222in"} ) *only*.

**Saturation Corrections and Efficiency Corrections for fluxes:**

The HILT, MAST, and PET instruments include instrument livetime counters
that are used to correct the fluxes due to instrument deadtime. These
corrections can have the effect of correcting the rate by more than a
factor of 10 under high count rate conditions. When deadtime corrections
are important, the saturation Data Quality Flag is raised to indicate
that the fluxes are out of calibration.

The 4 HILT fluxes are also affected by drift in the proportional counter
and background effects. The HILT proportional counter gain decreased
with time during the mission, as is typical for this type of device. The
gain decrease modifies the energy range for the HILT fluxes, and this
has been corrected for in the flux calculation. In addition, HILT fluxes
are subject to background under very quiet conditions, and this
background has been taken into account in the flux calculation.

The LICA instrument has triggering efficiencies for electrons, H, and He
that are substantially less than 1.

> For the **LICA 1 flux**, the overall correction depends on the mix of
> species triggering the SSDs, and so the calculation of calibrated flux
> of ions or electrons is not possible. Rather, the LICA 1 flux should
> be considered a qualitative measure of low energy ions and electrons
> only.
>
> The **LICA 2 flux** is primarily Helium, that had an average
> triggering efficiency of about 6% at launch. After that time, the
> efficiency for Helium varied as the microchannel plates aged due to
> repeated exposure to the radiation belts. To counteract that, the LICA
> MCP bias was adjusted periodically throughout the mission, but
> nevertheless the LICA 2 triggering efficiency varied with time. The
> overall efficiency at any given time was determined from the MCP gain
> settings, along with comparison with prelaunch data and spectral
> comparisons with the HILT sensor. For the flux calculation here, the
> efficiency was calculated as a function of time and used to correct
> the flux.

# Appendix 8 - Data Quality Flag Overview

Appendices 9, 10, 11, and 12 define the data quality flags for the count
rate files and flux files. Data quality flags are interpreted as
follows:

> 1\) if ALL quality flags for an instrument = 0 (good), then the data
> is in calibration.
>
> 2\) if ANY quality flag = 1 (bad), then there are two possibilities:
>
> a\) data (counts or fluxes) set to FILL (ISTP standard used)
>
> b\) data is included but is not in calibration
>
> 3\) if several quality flags are set = 1, then the data will be set to
> FILL unless the only flags set are those that are associated with
> out-of calibration conditions.

The tables in the following appendices list the flags and conditions for
setting the flags for each instrument for both flux and count rate data
files.

Most of the flags are self explanatory; however, a general flag has been
included called the \"*significant event\"* flag. This refers to periods
when the instrument data is out of calibration for miscellaneous reasons
not covered in the other flags, which refer mostly to routine events on
the spacecraft. Examples of significant event flags are:

• spacecraft safehold operation (all instruments affected)

• times when the spacecraft attitude control system memory allocation in
the spacecraft data system was filled (all instruments affected)

• times when the HILT closable cover was being cycled; times when the
HILT isobutane system was being tested, or was turned off to conserve
expendables (HILT affected), or after the HILT isobutane supply was
exhausted. *[NOTE: the HILT isobutane supply was exhausted on November
\`15, 1995.]{.underline}*

• times when the MAST or PET logic was commanded into special operating
states which affected the calibration temporarily; or when the MAST/PET
low voltage power supply was operating out of regulation (either MAST
and/or PET affected)

  ----------------------------- -----------------------------------------
  **ISTP Standard Fill Values** 

  INT\*4                        -2147483648

  REAL\*4                       -1.000000E+31
  ----------------------------- -----------------------------------------

# Appendix 9 - LICA data quality flags

There are two categories of data quality flags for each instrument,
those associated with 30-second averaged counts and fluxes and those
associated with polar averaged counts and fluxes.

+----+-----------------+---------------------------+------------------+
|    | LICA 30 Second  |                           |                  |
|    | Average Data    |                           |                  |
|    | quality flags   |                           |                  |
+----+-----------------+---------------------------+------------------+
| *  | **Data quality  | **Flagging Conditions**   | **Action taken   |
| *N | flag Name**     |                           | if**             |
| o. |                 |                           |                  |
| ** |                 |                           | **flag = 1**     |
+----+-----------------+---------------------------+------------------+
| 1  | LICA_OFF        | Set = 1 when LICA is off  | Counts and       |
|    |                 | during any portion of the | fluxes are set   |
|    |                 | 30 second averaging       | to FILL.         |
|    |                 | interval; Set = 0 when    |                  |
|    |                 | LICA is on for the entire |                  |
|    |                 | 30 second averaging       |                  |
|    |                 | interval.                 |                  |
+----+-----------------+---------------------------+------------------+
| 2  | LICA_IFC        | Set = 1 when LICA IFC is  | Counts and       |
|    |                 | active during any portion | fluxes are set   |
|    |                 | of the 30 second          | to FILL.         |
|    |                 | averaging interval; Set = |                  |
|    |                 | 0 when LICA IFC is        |                  |
|    |                 | inactive for the entire   |                  |
|    |                 | 30 second averaging       |                  |
|    |                 | interval.                 |                  |
+----+-----------------+---------------------------+------------------+
| 3  | LICA_BHV        | Set = 1 when LICA HV is   | Counts and       |
|    |                 | out of calibration at any | fluxes are set   |
|    |                 | time during 30 second     | to FILL.         |
|    |                 | averaging interval as     |                  |
|    |                 | indicated in the file     |                  |
|    |                 | LEICA_BAD_HV.DAT; Set = 0 |                  |
|    |                 | otherwise.                |                  |
+----+-----------------+---------------------------+------------------+
| 4  | LICA_SSD_SAT    | Set = 1 when              | Data have been   |
|    |                 | (SSD1+SSD1+SSD3+SSD4) \>  | included but are |
|    |                 | 1.0E4/sec at any time     | out of           |
|    |                 | during 30 second          | calibration.     |
|    |                 | averaging interval; Set = |                  |
|    |                 | 0 otherwise.              |                  |
+----+-----------------+---------------------------+------------------+
| 5  | LICA_MCP_SAT    | Set = 1 when START MCP    | Data have been   |
|    |                 | rate \> 1.0E4/sec at any  | included but are |
|    |                 | time during 30 second     | out of           |
|    |                 | averaging interval; Set = | calibration.     |
|    |                 | 0 otherwise.              |                  |
+----+-----------------+---------------------------+------------------+
| 6  | LICA_SIG        | Set = 1 when LICA is      | Counts and       |
|    |                 | affected by significant   | fluxes are set   |
|    |                 | event at any time during  | to FILL.         |
|    |                 | 30 second averaging       |                  |
|    |                 | interval; Set = 0         |                  |
|    |                 | otherwise.                |                  |
+----+-----------------+---------------------------+------------------+

+----+-----------------+---------------------------+------------------+
|    | LICA Polar Cap  |                           |                  |
|    | Data quality    |                           |                  |
|    | flags           |                           |                  |
+----+-----------------+---------------------------+------------------+
| *  | **Data quality  | **Flagging Conditions**   | **Action taken   |
| *N | flag Name**     |                           | if**             |
| o. |                 |                           |                  |
| ** |                 |                           | **flag = 1**     |
+----+-----------------+---------------------------+------------------+
| 1  | POLE_SSD_SAT    | Set = 1 if *any* 30       | Data have been   |
|    |                 | second averaged           | included but are |
|    |                 | (SSD1+SSD1+SSD3+SSD4)     | out of           |
|    |                 | count during polar pass   | calibration.     |
|    |                 | interval has its          |                  |
|    |                 | associated saturation     |                  |
|    |                 | flag set;                 |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+
| 1  | POLE_MCP_SAT    | Set = 1 if *any* 30       | Data have been   |
|    |                 | second averaged START     | included but are |
|    |                 | count during polar pass   | out of           |
|    |                 | interval has its          | calibration.     |
|    |                 | associated saturation     |                  |
|    |                 | flag set;                 |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+
| 3  | LICA_PARTIAL    | Set = 1 if *any* of       | Data are in      |
|    |                 | LICA_OFF, LICA_IFC,       | calibration, but |
|    |                 | LICA_SIG or LICA_BHV      | some data were   |
|    |                 | flags were set during     | excluded.        |
|    |                 | part, but not all of the  |                  |
|    |                 | polar pass accumulation   |                  |
|    |                 | period.                   |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+
| 4  | LICA_BAD        | Set = 1 if *any*          | Counts and       |
|    |                 | combination of LICA_OFF,  | fluxes are set   |
|    |                 | LICA_IFC, LICA_SIG or     | to FILL.         |
|    |                 | LICA_BHV flags being set  |                  |
|    |                 | caused no accumulation of |                  |
|    |                 | data during the entire    |                  |
|    |                 | polar pass interval. Set  |                  |
|    |                 | = 0 otherwise.            |                  |
+----+-----------------+---------------------------+------------------+

#  

# Appendix 10 - HILT data quality flags 

There are two categories of data quality flags for each instrument,
those associated with 30-second averaged counts and fluxes and those
associated with polar averaged counts and fluxes.

+----+-----------------+---------------------------+------------------+
|    | HILT 30 Second  |                           |                  |
|    | Average Data    |                           |                  |
|    | quality flags   |                           |                  |
+----+-----------------+---------------------------+------------------+
| *  | **Data quality  | **Flagging Conditions**   | **Action taken   |
| *N | flag Name**     |                           | if**             |
| o. |                 |                           |                  |
| ** |                 |                           | **flag = 1**     |
+----+-----------------+---------------------------+------------------+
| 1  | HILT_OFF        | Set = 1 when HILT is off  | Counts and       |
|    |                 | at any time during 30     | fluxes are set   |
|    |                 | second averaging          | to FILL.         |
|    |                 | interval.                 |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 when HILT is on   |                  |
|    |                 | for the entire 30 second  |                  |
|    |                 | averaging interval.       |                  |
+----+-----------------+---------------------------+------------------+
| 1  | HILT_IFC        | Set = 1 when HILT IFC is  | Counts and       |
|    |                 | active at any time during | fluxes are set   |
|    |                 | 30 second averaging       | to FILL.         |
|    |                 | interval,                 |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 when HILT IFC is  |                  |
|    |                 | inactive for the entire   |                  |
|    |                 | 30 second averaging       |                  |
|    |                 | interval.                 |                  |
+----+-----------------+---------------------------+------------------+
| 3  | HILT_HE1_SAT    | Set = 1 when HILT HE1     | Data have been   |
|    |                 | rate deadtime is \>90% or | included but are |
|    |                 | if background or          | out of           |
|    |                 | calibration uncertainties | calibration.     |
|    |                 | are large;                |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+
| 4  | HILT_HE2_SAT    | Set = 1 when HILT HE1     | Data have been   |
|    |                 | rate deadtime is \>90% or | included but are |
|    |                 | if background or          | out of           |
|    |                 | calibration uncertainties | calibration.     |
|    |                 | are large;                |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+
| 5  | HILT_HZ1_SAT    | Set = 1 when HILT HZ1     | Data have been   |
|    |                 | rate deadtime is \>90% or | included but are |
|    |                 | if background or          | out of           |
|    |                 | calibration uncertainties | calibration.     |
|    |                 | are large;                |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+
| 6  | HILT_HZ1_SAT    | Set = 1 when HILT HZ2     | Data have been   |
|    |                 | rate deadtime is \>90% or | included but are |
|    |                 | if background or          | out of           |
|    |                 | calibration uncertainties | calibration.     |
|    |                 | are large;                |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+
| 7  | HILT_SIG        | Set = 1 when HILT is      | Counts and       |
|    |                 | affected by significant   | fluxes are set   |
|    |                 | event at any time during  | to FILL.         |
|    |                 | 30 second averaging       |                  |
|    |                 | interval;                 |                  |
|    |                 |                           |                  |
|    |                 | Set 0 otherwise.          |                  |
+----+-----------------+---------------------------+------------------+

+----+-----------------+---------------------------+------------------+
|    | HILT Polar Cap  |                           |                  |
|    | Data quality    |                           |                  |
|    | flags           |                           |                  |
+----+-----------------+---------------------------+------------------+
| *  | **Data quality  | **Flagging Conditions**   | **Action taken   |
| *N | flag Name**     |                           | if**             |
| o. |                 |                           |                  |
| ** |                 |                           | **flag = 1**     |
+----+-----------------+---------------------------+------------------+
| 1  | POLE_HE1_SAT    | Set = 1 if *any* 30       | Data have been   |
|    |                 | second averaged HE1 count | included but are |
|    |                 | during polar pass         | out of           |
|    |                 | interval has its          | calibration.     |
|    |                 | associated saturation     |                  |
|    |                 | flag set; Set = 0         |                  |
|    |                 | otherwise.                |                  |
+----+-----------------+---------------------------+------------------+
| 1  | POLE_HE1_SAT    | Set = 1 if *any* 30       | Data have been   |
|    |                 | second averaged HE1 count | included but are |
|    |                 | during polar pass         | out of           |
|    |                 | interval has its          | calibration.     |
|    |                 | associated saturation     |                  |
|    |                 | flag set; Set = 0         |                  |
|    |                 | otherwise.                |                  |
+----+-----------------+---------------------------+------------------+
| 3  | POLE_HZ1_SAT    | Set = 1 if *any* 30       | Data have been   |
|    |                 | second averaged HZ1 count | included but are |
|    |                 | during polar pass         | out of           |
|    |                 | interval has its          | calibration.     |
|    |                 | associated saturation     |                  |
|    |                 | flag set; Set = 0         |                  |
|    |                 | otherwise.                |                  |
+----+-----------------+---------------------------+------------------+
| 4  | POLE_HZ1_SAT    | Set = 1 if *any* 30       | Data have been   |
|    |                 | second averaged HZ1 count | included but are |
|    |                 | during polar pass         | out of           |
|    |                 | interval has its          | calibration.     |
|    |                 | associated saturation     |                  |
|    |                 | flag set; Set = 0         |                  |
|    |                 | otherwise.                |                  |
+----+-----------------+---------------------------+------------------+
| 5  | HILT_PARTIAL    | Set = 1 if *any* of       | Data are in      |
|    |                 | HILT_OFF, HILT_IFC or     | calibration, but |
|    |                 | HILT_SIG flags were set   | some data were   |
|    |                 | during part, but not all  | excluded.        |
|    |                 | of the polar pass         |                  |
|    |                 | accumulation period.      |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+
| 6  | HILT_BAD        | Set = 1 if *any*          | Counts and       |
|    |                 | combination of HILT_OFF,  | fluxes are set   |
|    |                 | HILT_IFC or HILT_SIG      | to FILL.         |
|    |                 | flags being set caused no |                  |
|    |                 | accumulation of data      |                  |
|    |                 | during the entire polar   |                  |
|    |                 | pass interval.            |                  |
|    |                 |                           |                  |
|    |                 | Set = 0 otherwise.        |                  |
+----+-----------------+---------------------------+------------------+

# Appendix 11 - MAST data quality flags

There are two categories of data quality flags for each instrument,
those associated with 30-second averaged counts and fluxes and those
associated with polar averaged counts and fluxes.

+----+------------------+-------------------------+------------------+
|    | MAST 30 Second   |                         |                  |
|    | Average Data     |                         |                  |
|    | quality flags    |                         |                  |
+----+------------------+-------------------------+------------------+
| *  | **Data quality   | **Flagging Conditions** | **Action taken   |
| *N | flag Name**      |                         | if**             |
| o. |                  |                         |                  |
| ** |                  |                         | **flag = 1**     |
+----+------------------+-------------------------+------------------+
| 1  | MAST_OFF         | Set = 1 if is off       | Counts and       |
|    |                  | during any portion of   | fluxes are set   |
|    |                  | the 30 second averaging | to FILL.         |
|    |                  | interval; Set = 0 when  |                  |
|    |                  | is on for the entire 30 |                  |
|    |                  | second averaging        |                  |
|    |                  | interval.               |                  |
+----+------------------+-------------------------+------------------+
| 1  | MAST_IFC         | Set = 1 if IFC is       | Counts and       |
|    |                  | active during any       | fluxes are set   |
|    |                  | portion of the 30       | to FILL.         |
|    |                  | second averaging        |                  |
|    |                  | interval; Set = 0 when  |                  |
|    |                  | IFC is inactive for the |                  |
|    |                  | entire 30 second        |                  |
|    |                  | averaging interval.     |                  |
+----+------------------+-------------------------+------------------+
| 3  | MAST_SIG         | Set = 1 when is         | Counts and       |
|    |                  | affected by significant | fluxes are set   |
|    |                  | event at any time       | to FILL.         |
|    |                  | during 30 second        |                  |
|    |                  | averaging interval;     |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+
| 4  | MAST_ADC_SAT     | Set = 1 when ADCOR rate | Data have been   |
|    |                  | \> 1.0E4/sec at any     | included but are |
|    |                  | time during 30 second   | out of           |
|    |                  | averaging interval;     | calibration.     |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+

+----+------------------+-------------------------+------------------+
|    | MAST Polar Cap   |                         |                  |
|    | Data quality     |                         |                  |
|    | flags            |                         |                  |
+----+------------------+-------------------------+------------------+
| *  | **Data quality   | **Flagging Conditions** | **Action taken   |
| *N | flag Name**      |                         | if**             |
| o. |                  |                         |                  |
| ** |                  |                         | **flag = 1**     |
+----+------------------+-------------------------+------------------+
| 1  | POLE_ADC_SAT     | Set = 1 if *any* 30     | Data have been   |
|    |                  | second averaged ADCOR   | included but are |
|    |                  | count during polar pass | out of           |
|    |                  | interval has its        | calibration.     |
|    |                  | associated saturation   |                  |
|    |                  | flag set;               |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+
| 1  | MAST_PARTIAL     | Set = 1 if *any* of     | Data are in      |
|    |                  | MAST_OFF, MAST_IFC, or  | calibration, but |
|    |                  | MAST_SIG flags were set | some data were   |
|    |                  | during part, but not    | excluded.        |
|    |                  | all of the polar pass   |                  |
|    |                  | accumulation period.    |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+
| 3  | MAST_BAD         | Set = 1 if *any*        | Counts and       |
|    |                  | combination of          | fluxes are set   |
|    |                  | MAST_OFF, MAST_IFC or   | to FILL.         |
|    |                  | MAST_SIG flags being    |                  |
|    |                  | set caused no           |                  |
|    |                  | accumulation of data    |                  |
|    |                  | during the entire polar |                  |
|    |                  | pass interval.          |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+

# Appendix 12 - PET data quality flags

There are two categories of data quality flags for each instrument,
those associated with 30-second averaged counts and fluxes and those
associated with polar averaged counts and fluxes.

+----+------------------+-------------------------+------------------+
|    | PET 30 Second    |                         |                  |
|    | Average Data     |                         |                  |
|    | quality flags    |                         |                  |
+----+------------------+-------------------------+------------------+
| *  | **Data quality   | **Flagging Conditions** | **Action taken   |
| *N | flag Name**      |                         | if**             |
| o. |                  |                         |                  |
| ** |                  |                         | **flag = 1**     |
+----+------------------+-------------------------+------------------+
| 1  | PET_OFF          | Set = 1 if PET is off   | Counts and       |
|    |                  | during any portion of   | fluxes are set   |
|    |                  | the 30 second averaging | to FILL.         |
|    |                  | interval; Set = 0 when  |                  |
|    |                  | PET is on for the       |                  |
|    |                  | entire 30 second        |                  |
|    |                  | averaging interval.     |                  |
+----+------------------+-------------------------+------------------+
| 1  | PET_IFC          | Set = 1 if PET IFC is   | Counts and       |
|    |                  | active during any       | fluxes are set   |
|    |                  | portion of the 30       | to FILL.         |
|    |                  | second averaging        |                  |
|    |                  | interval;               |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 when PET IFC is |                  |
|    |                  | inactive for the entire |                  |
|    |                  | 30 second averaging     |                  |
|    |                  | interval.               |                  |
+----+------------------+-------------------------+------------------+
| 3  | PET_SIG          | Set = 1 when PET is     | Counts and       |
|    |                  | affected by significant | fluxes are set   |
|    |                  | event at any time       | to FILL.         |
|    |                  | during the 30 second    |                  |
|    |                  | averaging interval;     |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+
| 4  | PET_P1HI_SAT     | Set = 1 when PET P1HI   | Data have been   |
|    |                  | rate \> 1.0E4/sec at    | included but are |
|    |                  | any time during the 30  | out of           |
|    |                  | second averaging        | calibration.     |
|    |                  | interval;               |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+

+----+------------------+-------------------------+------------------+
|    | PET Polar Cap    |                         |                  |
|    | Data quality     |                         |                  |
|    | flags            |                         |                  |
+----+------------------+-------------------------+------------------+
| *  | **Data quality   | **Flagging Conditions** | **Action taken   |
| *N | flag Name**      |                         | if**             |
| o. |                  |                         |                  |
| ** |                  |                         | **flag = 1**     |
+----+------------------+-------------------------+------------------+
| 1  | POLE_P1HI_SAT    | Set = 1 if *any* 30     | Data have been   |
|    |                  | second averaged P1HI    | included but are |
|    |                  | count during polar pass | out of           |
|    |                  | interval has its        | calibration.     |
|    |                  | associated saturation   |                  |
|    |                  | flag set; Set = 0       |                  |
|    |                  | otherwise.              |                  |
+----+------------------+-------------------------+------------------+
| 1  | PET_PARTIAL      | Set = 1 if *any* of     | Data are in      |
|    |                  | PET_OFF, PET_IFC, or    | calibration, but |
|    |                  | PET_SIG flags were set  | some data were   |
|    |                  | during part, but not    | excluded.        |
|    |                  | all of the polar pass   |                  |
|    |                  | accumulation period.    |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+
| 3  | PET_BAD          | Set = 1 if *any*        | Counts and       |
|    |                  | combination of PET_OFF, | fluxes are set   |
|    |                  | PET_IFC or PET_SIG      | to FILL.         |
|    |                  | flags being set caused  |                  |
|    |                  | no accumulation of data |                  |
|    |                  | during the entire polar |                  |
|    |                  | pass interval.          |                  |
|    |                  |                         |                  |
|    |                  | Set = 0 otherwise.      |                  |
+----+------------------+-------------------------+------------------+

# Appendix 13 - Reference Documents

[SAMPEX Master Data File Description]{.underline} Document \# PP94 -
116, Version 1.0, 6 April 1994 Department of Physics, Space Physics
Group University of Maryland College Park, MD 10741

[Telemetry Packet Description for the SAMPEX Data Processing Unit
(DPU),]{.underline} prepared by Space Science Laboratory, the Aerospace
Corporation, 26 August 1991, document SAM-1-O-08195 Rev C.

[Small Explorer Project Data Management Plan for Solar Anomalous and
Magnetospheric Explorer.]{.underline} SAMPEX-MGMT-018, 18 March 1994
Goddard Space Flight Center Greenbelt, MD

[An Overview of the Solar, Anomalous, and Magnetospheric Particle
Explorer (SAMPEX) Mission,]{.underline} D. N. Baker, G. M. Mason, O.
Figueroa, G. Colon, J. G. Watzin, and R. M. Aleman, IEEE Transactions on
Geoscience and Remote Sensing, Vol. 31, No., 3, May 1993, p 531.

[HILT: A Heavy Ion Large Area Proportional Counter Telescope for Solar
and Anomalous Cosmic Rays.]{.underline} B. Klecker, et al. IEEE
Transactions on Geoscience and Remote Sensing, Vol. 31, No. 3, May 1993,
p. 542.

[LEICA: A Low Energy Ion Composition Analyzer for the Study of Solar and
Magnetospheric Heavy Ions.]{.underline} G. M. Mason, et al. IEEE
Transactions on Geoscience and Remote Sensing, Vol. 31, No. 3, May 1993,
p. 549.

[MAST: A Mass Spectrometer Telescope for Studies of the Isotopic
Composition of Solar, Anomalous, and Galactic Cosmic Ray
Nuclei.]{.underline} W. R. Cook, et al. IEEE Transactions on Geoscience
and Remote Sensing, Vol. 31, No. 3, May 1993, p. 557.

[PET: A Proton/Electron Telescope for Studies of Magnetospheric, Solar,
and Galactic Particles.]{.underline} W. R. Cook, et al. IEEE
Transactions on Geoscience and Remote Sensing, Vol. 31, No. 3, May 1993,
p. 565.

[The SAMPEX Data Processing Unit,]{.underline} D. J. Mabry, S. J.
Hansel, and J. B. Blake, IEEE Transactions on Geoscience and Remote
Sensing, Vol. 31, No. 3, May 1993, p. 572.

[NSSDC CDF User\'s Guide]{.underline} Version 1.4, February 15, 1994
National Space Science Data Center Goddard Space Flight Center
Greenbelt, MD

[International Solar-Terrestrial Physics (ISTP) Key Parameter Generation
Software (KPGS) Standards and Conventions]{.underline} W. H. Mish
Version 1.3, March, 1994 Goddard Space Flight Center Greenbelt, MD