ASTROSAT CZTI

Data Quality Report

Orbit 57391

Creation date: 2026-05-07T17:42:17.823106
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_57391cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57391cztM0_level2_quad_clean.evt
Size (bytes)445,740,48083,393,280
Size425.1 MB 79.5 MB
Events in quadrant A2,764,273569,570
Events in quadrant B2,727,836608,579
Events in quadrant C7,056,009429,784
Events in quadrant D3,493,620506,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123551
B0123961
C0250611
D0144621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5884721.223657%
B5884681.155676%
C5884151725.781781%
D58841933.280082%

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 6919 5887 9 9 0.13% 0.15%
B 6919 5887 11 11 0.16% 0.19%
C 6919 5886 1206 1206 17.43% 20.49%
D 6919 5887 160 160 2.31% 2.72%

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 12 89810 564.15 642 625 158.1
A 3 14 60937 381.51 642 625 158.1
A 3 61 60817 380.75 642 625 158.1
B 10 247 73113 533.73 627 603 135.9
B 0 245 60350 439.79 627 603 135.9
B 5 185 25720 184.88 627 603 135.9
C 15 224 4543293 30562.97 543 538 148.6
C 12 250 226806 1522.3 543 538 148.6
C 14 254 40978 272.07 543 538 148.6
D 15 142 401940 2324.15 613 584 172.7
D 3 224 317228 1833.6 613 584 172.7
D 7 96 60040 344.29 613 584 172.7

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