# Presentation: 644281

## The charge

- Basic Ideas
- What we can do now and later

- Run Quality Coordination Meeting
- Feb 12th, 2003

- Tom Diehl

## Draft Charge

- This charge still being thought out by the great powers. I wrote:
- Our physics interests require emphasis on attaining and maintaining the highest standard of data quality.
- Many separate efforts going on at Expert/Online/Offline/Physics Gp levels
- We are charged to
- Increase communication between efforts
- Provide feedback to the appropriate detector and software groups
- Provide feedforward to the analysis and physics groups
- Identify places where we need effort.

- Tom Diehl

## Summary of D0 Data Quality Discussion

- Special GCAS Meeting Jan 27th
- Agenda was
- Identify what we are doing well
- Identify where we need an improvement and hear new, untried ideas
- Identify people who are willing to help
- Jianming said he was going to put the “minutes” on the web.

- Tom Diehl

## What is working well

- Lots of tools and different levels of monitoring
- The polish and importance of the alarms is increasing
- Experienced daq-shifters paying off
- Global monitoring is beginning to make a contribution

- Tom Diehl

## Where we need improvement

- Lots of tools and error messages but often we don’t follow up. Shifters are taught to ignore error messages
- Example: the unpacker shows errors. The expert says he/she is aware of them but cannot fix them at the moment
- The readout monitor said almost all the PDT’s had readout errors but the expert said they were expected and could be ignored with this version
- Shifters are urged to log and report all problems

- Tom Diehl

## New Ideas

- Various Levels of data quality control
- The run: Run Quality Database
- The luminosity block: GS implementing idea to overcome the “latency loophole” in the alarm system -> thumbnails? An alarm database (browser tools for the SES log)?
- The Event: Muon Raw data quality -> thumbnail
- The Reco version: Reco quality assessment for every run evaluated by the “Offline shifter”
- Software alarms connected to Coor

- Tom Diehl

## Unused Assets

- Offline shifters to look at every run
- Requires a way to glom-together some output from all parts of a run (Sangjoon Lee) to make:
- Standard plots and histograms
- Need someplace to check off that things are good/bad (all work should  have a product).
- Call chain in case of problems

- Tom Diehl

## What I think we need to do next

- Gather complete list of what data quality control is going on in each system and by whom
- Understand what is the best technical solution to the Reco-data-glomming problem
- What do we look at? Tuples? Is so, where/how much data is cached?
- What do we look at? Thumbnails? If so, what histos and which package?
- Increase the usefulness of Global Monitoring
- Advocate more standard plots from the experts
- Advocate increased communication to experts
- Questions or Serious problems -> phone call list
- Less serious problems -> email list
- Carefully get complete, 4  coverage  into the Run Quality Database (remember 0.95^25 = 0).

- Tom Diehl

## Points of Monitoring & Quality Control

- Data-
- Taking

- Recorded
- Data
- Online

- Alarms & SES

- Examine

- Reco
- Farms

- Analysis
- Samples

- Recorded
- Data
- Offline

- Good Runs List
- Detector

- Good Runs List
- Reco Version Dep.

- Event Check
- And Marking

- Could be

- Tom Diehl

## Summary

- We need to have the best quality data so that we get the best quality results.
- There are diverse and serious efforts
- I don’t know how this coordination effort is going to be run
- I am making it up as I go along.
- Do we have meetings?

- Tom Diehl

## Headline on D0 World News

- Perfectly good muon data wrecked!
- Usual suspects rounded up for questioning.
- It’s happened two or three times to us.
- It could happen to you.
- It might be preventable.

- I wrote this slide for the Oklahoma workshop.
- I don’t recall what the problem was that time but I bet it was more subtle.
- I used it again in December

- Tom Diehl