ASTROSAT CZTI

Data Quality Report

Orbit 57397

Creation date: 2026-05-08T04:02:59.006617
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_102T01_9000006572_57397cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57397cztM0_level2_quad_clean.evt
Size (bytes)567,305,28092,039,040
Size541.0 MB 87.8 MB
Events in quadrant A3,493,426620,278
Events in quadrant B3,662,515646,145
Events in quadrant C9,102,592467,553
Events in quadrant D4,161,368532,807

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158632
B0163872
C0322432
D0178722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74631161.554335%
B74631812.425298%
C7463183424.574568%
D74622082.787456%

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 7986 7742 24 24 0.30% 0.31%
B 7986 7742 26 26 0.33% 0.34%
C 7986 7732 1343 1343 16.82% 17.37%
D 7985 7741 131 131 1.64% 1.69%

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 14 96484 478.91 816 795 199.8
A 3 61 95377 473.37 816 795 199.8
A 0 12 76288 377.83 816 795 199.8
B 7 252 107818 616.74 802 774 173.6
B 5 185 96813 553.33 802 774 173.6
B 0 245 96167 549.61 802 774 173.6
C 15 224 5061096 26692.43 692 684 189.6
C 13 3 314477 1655.18 692 684 189.6
C 12 249 278613 1466.01 692 684 189.6
D 8 240 551691 2548.78 773 740 216.2
D 3 12 247157 1139.96 773 740 216.2
D 3 224 63826 291.85 773 740 216.2

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