Transcript ppt

ISOC/SVAC
Instrument Analysis Meeting, May 26, 2006
Announcements
Anders W. Borgland
Science
Verification,
Analysis and
Calibrations
/
ISOC
Anders W. Borgland
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ISOC/SVAC
Instrument Analysis Meeting, May 26, 2006
LAT@NRL
• Cosmic ray data taking at NRL:
– Trigger rate about 70 Hz lower than at SLAC
– Thicker roof on the building ....
• List of cosmic ray runs:
– LAT NRL '06
Anders W. Borgland
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ISOC/SVAC
Instrument Analysis Meeting, May 26, 2006
Reprocessing
• Started!
– Finally!
• All runs in the runs list will be reprocessed:
– LAT April/May '06
• All NRL cosmic ray runs will be:
– Reprocessed or
– Taken directly with the new EngineeringModel release
• Will take of the order of 10 days to finish:
– Depends on NRL
– NRL data is being processed in the same pipeline
• How do you know if your favorite run has been reprocessed?
– The Root file name will contain 'v3r6p2'
– We start at the top of the runs list and work our way through it
• Afterwards:
– Will reprocess using the muon hypothesis:
– Not all the runs
Anders W. Borgland
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ISOC/SVAC
Instrument Analysis Meeting, May 26, 2006
Monte Carlo
• Just started!
– Using the same release as the data
– Will finish over the weekend.
• Usual samples:
– Surface muons
– All gamma: 10 MeV – 20 GeV
• If you need anything else:
– Let me know!
Anders W. Borgland
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ISOC/SVAC
Instrument Analysis Meeting, May 26, 2006
EngineeringModel v6r070329p16
• Major improvements:
– Calibrated ACD quantities
– CTB variables available in Merit
– Better error decoding
From data report:
ACD MIPs
(here path length
corrected)
Plot from Eric!
Anders W. Borgland
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ISOC/SVAC
Instrument Analysis Meeting, May 26, 2006
New Error Decoding
Data report:
Made for each run!
Much better error decoding
thanks to Heather!
Can now distinguish TKR FIFO
full from other (real) errors.
Anders W. Borgland
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ISOC/SVAC
Instrument Analysis Meeting, May 26, 2006
Useful Things To Know About The Data
• I try to keep an updated list of issues that affect the data quality:
Anders W. Borgland
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ISOC/SVAC
Instrument Analysis Meeting, May 26, 2006
Data Analysis
• Reprocessing under way!
• Calibrated ACD quantities finally available in the SVAC ntuple!
– Learn how to use the ACD in your analysis!
• Context information:
– See next talk
– Now available in the SVAC ntuple!
– You now have all the time and event counters you will ever have!
– Learn how to use them!
• Data reports:
– We make a Digi and a Recon data report for each run!
– If you see something strange in a run, check the corresponding
report.
Look at the data!
Anders W. Borgland
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