CASA Update
Recent Progress and Future Plans
of CASA and PIPELINE

Kana Sugimoto (NAOJ)
on behalf of CASA andPIPELINE teams

Common Astronomy Software
Applications (CASA)
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CASA

A data reduction and analysis software of data observed by radio
astronomical telescopes, both interferometer and single dish
CASA officially supports ALMA (including TP), EVLA, Nobeyama 45-m
telescope, and ASTE (spectral line observations)
All ALMA PI data are processed by CASA before delivered to observers
and data processed by CASA are archived– ALMA PIPELINE also uses CASA inside
The latest CASA release is 4.7.0. Schedule of the next releases:– A patch release 4.7.1 in March for Cycle 4 use– CASA release 5.0 (ETA: March 2017)
Developed in collaboration with NAOJ, NRAO, ESO, and ASIAA– ASIAA newly joined the team! The initial focus is on CARTA

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CASA Progress (as of 4.7.1)

CASAGeneral• Proper handling of bdfflags from ALMA in importasdm (4.7.1)• Extended support of data formats– importatca (RPFITS), importnro (NOSTAR), inportasap (Scantable)• Extended metadata summarization features (msmd tools)• Unification of data handling infrastructure– refactoring of split, hanningsmooth, and cvel (ongoing: calibration)
Interferometry• tclean improvements– Auto-boxing: usemask=‘auto-thres’ or ‘auto-thres2’– parallelization for continuum and cube modes (under tests)

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CASA Progress - continuedCASASingle Dish
• Transition to processing on Measurementset (MS transition)– 70% of single dish task features in ASAP has been migrated– verified a workflow to process multi-beam observation datasets byFOREST, a new receiver on Nobeyama 45-m telescope.
• Support of ALMA Cycle 4– CASA supports end-to-end processing of Solar fast-scanningobservations– CASA and PIPELINE supports end-to-end processing of muti-target
source observations
Find more at CASA webpage! http://casa.nrao.edu

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CASA

CASA – Major development activities•

New web-based documentation using Plone (CASA 5.0)
– https://casa.nrao.edu/plonedocs•

Activate crash reporter by default (CASA 5.0)•

Further improvements to tclean: finalize auto-boxing, cube parallelization•Streamline polarization calibration of ALMA•

Complete MS transition of single dish module•

Performance improvements of new single dish module•

Use better ALMA Primary beams (details TBD)•VLBI capabilities have been developed at Jive (CASA 5.0)

Users feed back would be appreciated (via help desk, etc.)

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CASA

PIPELINE Status - Interferometry••Standard mode observations of ALMA are processed by PIPELINEInterferometry imaging PIPELINE is started to be used in Cycle 4!

Pipeline Performance (as of Dec 15)• Calibration: Apparent decrease in
number requiring manual flags. (Stillsmall number statistics for Cycle 4)• Preliminary Imaging Results• 72 MOUSes processed at NAASC• 55% Success (w/o intervention)• 36% Intervention• 8% Need Selfcal• 1% Diverted to Manual

Cycle2
Cycle3
Cycle4
No Intervention

Intervention

TweakedSent to Manual

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PIPELINE Status - Single DishCASA

Standard mode observations of ALMA are processed by PIPELINE
Single Dish PIPELINE is started to be used in Cycle 3 for bothcalibration and imaging!
malform• PIPELINE fully operates oned data
Measurementset in Cycle 4••

8%Cycle 3 results as of Nov. 25• 72 MOUSes processed by PL• 75% Delivered to PI (w/o intervention)• 17% PL Failed• 3/4 of them failed by memory
consumption

Fail17%

Success75%

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CASA

PIPELINE Priorities toward Cycle 5•

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AQUA interaction: AQUA is responsible for QA2 support– PIPELINE passes information for sensitivity calculation and more FITS
keywords
Support efficient review of PL results: WebLog, PIPELINE QA score
Performance improvements– parallelization, better memory management, less memory usage
Improvements of imaging product (interferometer)– auto-boxing and deeper clean
APDM interaction– getting user intents, e.g., imaging parameters, a representative source
Nobeyama PIPELINE– based on ALMA single dish PIPELINE (ETA: 2017 Q4)

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