ASTROSAT CZTI

Data Quality Report

Orbit 20191113_A07_149T01_9000003304_level2

Creation date: 2019-11-19T14:02:18.627809
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_149T01_9000003304cztM0_level2_bc.evt modeM0/AS1A07_149T01_9000003304cztM0_level2_quad_clean.evt
Size (bytes)2,601,601,9201,237,415,040
Size2.4 GB 1.2 GB
Events in quadrant A17,072,4648,089,277
Events in quadrant B17,823,6718,318,036
Events in quadrant C16,759,1237,906,056
Events in quadrant D21,657,2657,661,761

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016380
B016380
C016380
D016380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01658600
B01683990
C01668910
D01796610

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01550
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A803367030.875075%
B803369281.155148%
C8033611511.432733%
D8033610991.368004%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 107328 80338 5 5 0.00% 0.01%
B 107328 80332 10 10 0.01% 0.01%
C 107328 80337 2 2 0.00% 0.00%
D 107328 80339 161 161 0.15% 0.20%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 4 2 108076 110.02 4388 4321 943.1
A 13 254 101312 102.84 4388 4321 943.1
A 3 1 50412 48.87 4388 4321 943.1
B 6 36 174802 204.59 4498 4408 832.8
B 0 190 106322 122.37 4498 4408 832.8
B 0 245 102763 118.1 4498 4408 832.8
C 0 10 96295 91.44 4299 4295 1006.2
C 3 9 40463 35.95 4299 4295 1006.2
C 10 22 37032 32.54 4299 4295 1006.2
D 1 52 3288704 3297.83 4334 4194 996.0
D 13 174 945701 945.32 4334 4194 996.0
D 2 234 306466 303.5 4334 4194 996.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter