ASTROSAT CZTI

Data Quality Report

Orbit 20201031_A09_038T15_9000003936_level2

Creation date: 2021-01-07T17:00:11.649546
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/AS1A09_038T15_9000003936cztM0_level2_bc.evt modeM0/AS1A09_038T15_9000003936cztM0_level2_quad_clean.evt
Size (bytes)250,672,32086,397,120
Size239.1 MB 82.4 MB
Events in quadrant A1,256,794572,415
Events in quadrant B1,374,026581,849
Events in quadrant C1,261,689554,917
Events in quadrant D3,302,749507,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116790
B0122430
C0122650
D0194960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5708290.508059%
B5708721.261388%
C57081141.997197%
D570875313.192011%

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 5707 5707 3 3 0.05% 0.05%
B 5707 5707 1 1 0.02% 0.02%
C 5707 5707 3 3 0.05% 0.05%
D 5707 5707 197 197 3.45% 3.45%

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 0 13 96885 1478.31 291 285 65.3
A 6 16 21737 328.29 291 285 65.3
A 0 31 9279 137.64 291 285 65.3
B 10 245 133254 2269.87 294 288 58.6
B 0 230 60596 1029.52 294 288 58.6
B 15 33 20703 348.51 294 288 58.6
C 2 16 162449 2354.44 281 279 68.9
C 1 16 9661 136.21 281 279 68.9
C 7 221 9277 130.64 281 279 68.9
D 1 52 1620399 25258.22 267 257 64.1
D 7 80 402991 6278.68 267 257 64.1
D 12 227 112829 1755.01 267 257 64.1

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