ASTROSAT CZTI

Data Quality Report

Orbit 56215

Creation date: 2026-02-17T15:05:05.850964
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_083T04_9000006550_56215cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56215cztM0_level2_quad_clean.evt
Size (bytes)496,704,96096,390,720
Size473.7 MB 91.9 MB
Events in quadrant A6,715,218552,180
Events in quadrant B3,535,961703,046
Events in quadrant C4,284,032613,249
Events in quadrant D3,344,620595,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243762
B0151042
C0173202
D0144962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6517116517.876323%
B65172393.667332%
C65173966.076416%
D65181492.285977%

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 7627 6517 941 941 12.34% 14.44%
B 7627 6517 35 35 0.46% 0.54%
C 7627 6517 236 236 3.09% 3.62%
D 7628 6518 42 42 0.55% 0.64%

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 12 115 2454914 14714.43 674 657 166.8
A 4 95 524396 3140.06 674 657 166.8
A 8 176 467956 2801.68 674 657 166.8
B 1 255 198897 1273.86 723 695 155.6
B 5 185 197247 1263.26 723 695 155.6
B 0 171 80349 511.94 723 695 155.6
C 12 254 1022357 5327.01 703 694 191.8
C 12 252 302914 1575.79 703 694 191.8
C 9 38 115036 596.18 703 694 191.8
D 6 239 169354 839.93 714 683 200.8
D 3 12 70483 347.58 714 683 200.8
D 14 52 67313 331.8 714 683 200.8

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