ASTROSAT CZTI

Data Quality Report

Orbit 56665

Creation date: 2026-03-19T22:09:05.140364
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/AS1A14_083T06_9000006558_56665cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56665cztM0_level2_quad_clean.evt
Size (bytes)458,974,08085,152,960
Size437.7 MB 81.2 MB
Events in quadrant A2,729,272581,505
Events in quadrant B2,783,201623,540
Events in quadrant C4,827,820534,262
Events in quadrant D6,186,675423,412

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125431
B0126011
C0184191
D0225131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5953520.873509%
B5953601.007895%
C59532333.913993%
D5953121120.342684%

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 7043 5953 11 11 0.16% 0.18%
B 7043 5953 15 15 0.21% 0.25%
C 7043 5953 235 235 3.34% 3.95%
D 7043 5953 1230 1230 17.46% 20.66%

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 3 62 55221 342.84 642 628 159.2
A 8 249 43371 268.42 642 628 159.2
A 3 14 30297 186.32 642 628 159.2
B 0 213 138209 1013.34 632 608 135.8
B 0 245 39757 288.31 632 608 135.8
B 5 185 29262 211.02 632 608 135.8
C 9 38 1637463 9794.63 605 597 167.1
C 12 252 204584 1220.61 605 597 167.1
C 1 16 153531 915.12 605 597 167.1
D 2 249 2958747 18849.07 556 532 156.9
D 10 199 488217 3107.42 556 532 156.9
D 2 31 168271 1068.79 556 532 156.9

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