ASTROSAT CZTI

Data Quality Report

Orbit 20191109_A07_018T02_9000003292_level2

Creation date: 2025-12-05T17:43:53.734422
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/AS1A07_018T02_9000003292cztM0_level2.fits modeM0/AS1A07_018T02_9000003292cztM0_level2_quad_clean.evt
Size (bytes)264,591,360241,522,560
Size252.3 MB 230.3 MB
Events in quadrant A1,671,1321,476,367
Events in quadrant B1,596,8261,480,330
Events in quadrant C1,602,4401,390,806
Events in quadrant D1,374,9601,198,253

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0539120
B0548420
C0552070
D0697060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05240
B05240
C05240
D05240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A257054471.738961%
B257055822.264151%
C257055892.291383%
D2570514995.831550%

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 30676 25705 0 0 0.00% 0.00%
B 30676 25705 0 0 0.00% 0.00%
C 30676 25705 0 0 0.00% 0.00%
D 30676 25689 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 1535 10.41 434 408 108.2
A 7 110 1299 8.23 434 408 108.2
A 9 19 1207 7.38 434 408 108.2
B 2 9 1271 10.14 422 403 85.6
B 5 128 1073 7.83 422 403 85.6
B 5 255 1052 7.58 422 403 85.6
C 12 241 1164 7.07 422 396 108.7
C 9 233 1088 6.37 422 396 108.7
C 9 242 1063 6.14 422 396 108.7
D 7 3 994 6.01 392 359 105.7
D 10 189 989 5.96 392 359 105.7
D 3 14 986 5.93 392 359 105.7

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