GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 1 GLAST Large Area Telescope: TKR Data Processing.

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Presentation transcript:

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 1 GLAST Large Area Telescope: TKR Data Processing Overview Hiro Tajima (SLAC) TKR Gamma-ray Large Area Space Telescope

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 2 Introduction We cannot trend parameters for each TKR elements (800K strips, 14K GTFEs, 576 layers). –Trend tower (or layer) average of ratio of parameters for individual elements with respect to the references. –Requires offline processing. Parameters for TKR data processing and trending. –Calibrations (see Mizuno’s talk for trending results). GTFE threshold DAC. GTFE calibration DAC (charge scale). TOT gain parameters. Channel thresholds. Bad channels (dead, hot and disconnected). –Performance monitoring. Hot strips. Noise flare. Efficiency. Layer displacement. Tower displacement.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 3 GTFE Threshold DAC Calibrations Type of Data processing –Online script (TkrThresholdCal.py). Perquisites –GTFE charge scale. Output –LATTE type schema xml file. Manually included as LATTE schema ancillary file. LATTE schema file is converted to LATc to be used in LICOS. Trending –Offline python script to read the online test reports. –Manual handling of valid run number list.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 4 GTFE Charge Scale Calibrations Type of Data processing –Offline muon data analysis (calibGenTKR/totCalib). Perquisites –Calibrated GTFE threshold DAC for muon data taking. –TOT gain parameters for each channel. Output –Special xml file. Manually included as LATTE schema ancillary file for online scripts. –LATTE does not understand the contents –Only TKR online script parse the contents. –Not sure how LICOS handles this file. Converted to a special ROOT file to be put into offline analysis database. Trending –Offline python script to read output xml file. –Manual handling of valid run number list.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 5 TOT Gain Parameters Calibrations Type of Data processing –Online script (TkrTotGain.py). Perquisites –Calibrated GTFE threshold DAC. Output –Special xml file. Converted to ROOT file and put into offline analysis database. Direct access to the xml file from charge scale calibration job via job option. Trending –Offline python script to read online test reports. –Manual handling of valid run number list.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 6 Channel Thresholds Calibrations Type of Data processing –Online script (TkrThrDispersion.py). Perquisites –Calibrated GTFE threshold DAC. –GTFE charge scale. Output –Special xml file. Converted to ROOT file and put into offline analysis database for MC generation. Trending –N/A.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 7 Dead/Disconnected Channels Calibrations Type of Data processing –Online script (TkrNoiseAndGain.py). –Offline data analysis (svac/EngineeringRoot/TkrHits). –Offline history analysis (calibGenTKR/totCalib). Perquisites –NONE. Output –Dead strip xml file. Manually included as LATTE schema ancillary file. –LATTE schema file is converted to LATc to be used in LICOS. Put into offline analysis database. Trending –Offline python script to read output xml file. –Manual handling of valid run number list.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 8 Hot Strips Calibrations Type of Data processing –Online script (TkrNoiseOccupancy). –Offline data analysis (svac/EngineeringRoot/TkrNoiseOcc). –Offline history analysis (in development). Offline data to mask new hot strips. Online data to put cured strips into probation. Perquisites –NONE. Output –Hot strip xml file. Manually included as LATTE schema ancillary file. –LATTE schema file is converted to LATc to be used in LICOS. Put into offline analysis database Trending –Offline python script to read output xml file. –Manual handling of valid run number list.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 9 Calibration Data Processing Flow (1) Data processing flow for threshold, charge scale, TOT gain. Muon data Offline calibration Database Threshold DAC calibration Offline charge scale analysis Charge scale xml file threshold DAC xml file TOT gain calibration TOT gain xml file Channel thresh. xml file Channel thresh. calibration Muon data taking

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 10 Calibration Data Processing Flow (2) Data processing flow for bad strips. Muon data Hot strip calibration Disconnected strip analysis Hot strip xml file Dead channel calibration Dead channel xml file Dead/disconnected strip xml file Muon data taking Hot strip monitor Hot strip offline data Hot strip history analysis Hot strip online data

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 11 Current Calibration Data Trending Flow Currently there are too much manual processing. Trending Analysis Charge scale xml file Threshold DAC test report TOT gain test report Hot strip xml file Dead/disconnected strip xml file Valid run or file list ROOT graph

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 12 Desired Calibration Data Trending Flow Use database to keep track of parameters to be trended. –Should be common to the database for online schema files and offline calibration file. Charge scale xml file Threshold DAC xml file TOT gain xml file Hot strip xml file Dead/disconnected strip xml file Calibration Database Trending Analysis Trend data ISOC Trending Database

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 13 TKR Performance Monitor Monitored Parameters –Hot strips, noise flare (see Sugizaki’s talk). –Disconnected strips (see Mizuno’s talk). –Efficiency, layer and tower displacements. Type of Data processing –Muon offline data analysis. Built into SVAC ntuple processing. Perquisites –Calibrated TKR. Output –NONE defined so far. Exist as ROOT histograms. Trending –Manual analysis of ROOT histograms. –Manual handling of valid run number list. Some parameters require multiple runs.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 14 TKR Performance Trending Flow Multiple runs need to be combined to get sufficient statistics. –This part should be automated somehow. Muon data Data pipeline Muon data taking SVAC ROOT Valid run list Trending Analysis Excel graph

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 15 Efficiency Trending Result Consistent downward trend. –Inconsistent with stable bad strips. –Probably due to LAT configuration change. Efficiency values depend on track quality and other factors. Further improvement on track selections required to make it more stable.

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 16 Layer Displacement Monitoring Monitor average of residual from straight line fit within the tower. –The value depends on track angle distribution and other factors. –The result is consistent with Pisa alignment results. –Variation of the layer displacement from reference is consistent with statistical error. Issue warning if layer displacement is varied from the reference by more than 4 . Layer displacement (mm) Pisa alignment parameter (mm) Layer displacement change/error

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 17 Tower Displacement Monitoring Monitor average of residual from track extrapolated from adjacent towers. –The value depends on track angle distributions and tower configuration. Comparison between different LAT configuration is not very meaningful. –Variation of the tower displacement from reference is NOT consistent with statistical error. Tower displacement change/error

GLAST LAT Project LAT Instrument Analysis Workshop – Feb 27, 2006 Hiro Tajima, TKR Data Processing Overview 18 Conclusions Trending of TKR calibration data requires some offline analysis due to large number of elements involved. Calibration data trending requires much manual processing. –We would like to have database to store all valid (online/offline) calibration data to automate. –We would like to utilize ISOC trending tool for UI. TKR performance monitor is being implemented. –Basic data processing implemented in data pipeline. Systematic effects on tower efficiency and displacement need to be addressed. –Automation required to combine multiple runs. –Interface to ISCO trending tool.