ASTROSAT CZTI

Data Quality Report

Orbit 20170722_G07_020T01_9000001398_level2

Creation date: 2025-11-15T13:39:21.458989
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G07_020T01_9000001398cztM0_level2.fits modeM0/AS1G07_020T01_9000001398cztM0_level2_quad_clean.evt
Size (bytes)877,348,800786,813,120
Size836.7 MB 750.4 MB
Events in quadrant A5,297,4404,563,837
Events in quadrant B5,127,3164,549,352
Events in quadrant C5,262,4364,406,560
Events in quadrant D4,424,7983,851,830

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01944400
B02042030
C01940650
D02627750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019220
B019160
C019240
D019220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9429711031.169708%
B9407115931.693402%
C942748210.870866%
D9408536993.931551%

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 111006 94868 0 0 0.00% 0.00%
B 111006 94719 0 0 0.00% 0.00%
C 111006 94882 0 0 0.00% 0.00%
D 111006 94758 0 0 0.00% 0.00%

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 29 4985 10.7 1375 1283 346.0
A 7 110 4398 9.0 1375 1283 346.0
A 0 30 3928 7.64 1375 1283 346.0
B 2 9 4411 11.59 1353 1285 269.8
B 12 226 3474 8.11 1353 1285 269.8
B 5 128 3413 7.89 1353 1285 269.8
C 12 241 3847 7.02 1389 1287 364.8
C 1 80 3843 7.01 1389 1287 364.8
C 1 81 3774 6.82 1389 1287 364.8
D 6 231 3273 6.28 1262 1143 339.4
D 10 189 3116 5.81 1262 1143 339.4
D 7 3 3108 5.79 1262 1143 339.4

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