ASTROSAT CZTI

Data Quality Report

Orbit 55983

Creation date: 2026-02-06T08:24:24.441721
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_066T02_9000006546_55983cztM0_level2.fits modeM0/AS1A14_066T02_9000006546_55983cztM0_level2_quad_clean.evt
Size (bytes)404,265,60092,868,480
Size385.5 MB 88.6 MB
Events in quadrant A3,944,461606,606
Events in quadrant B3,413,079654,710
Events in quadrant C3,284,981576,070
Events in quadrant D3,833,045535,791

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161731
B0146221
C0146371
D0158521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62862083.308941%
B6286761.209036%
C62861372.179446%
D62862033.229399%

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 7436 6287 184 184 2.47% 2.93%
B 7436 6287 17 17 0.23% 0.27%
C 7436 6286 114 114 1.53% 1.81%
D 7436 6286 147 147 1.98% 2.34%

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 7 64 531733 3167.44 672 654 167.7
A 15 32 226687 1348.1 672 654 167.7
A 8 249 202238 1202.28 672 654 167.7
B 5 172 282232 1949.31 670 646 144.5
B 0 199 115677 796.31 670 646 144.5
B 0 171 92775 637.77 670 646 144.5
C 14 80 614884 3388.08 653 646 181.3
C 6 223 44834 243.73 653 646 181.3
C 2 12 36298 196.65 653 646 181.3
D 11 129 514506 2796.06 644 615 183.8
D 2 249 197770 1072.71 644 615 183.8
D 14 52 118471 641.25 644 615 183.8

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