ASTROSAT CZTI

Data Quality Report

Orbit 58574

Creation date: 2026-07-26T08:16:10.177524
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_044T04_9000006592_58574cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58574cztM0_level2_quad_clean.evt
Size (bytes)620,087,040109,045,440
Size591.4 MB 104.0 MB
Events in quadrant A8,161,542621,333
Events in quadrant B5,070,396770,750
Events in quadrant C4,307,435700,921
Events in quadrant D4,781,793641,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298902
B0207082
C0186602
D0198832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8148147018.041237%
B81483534.332351%
C81481481.816397%
D81482863.510064%

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 9668 8343 1066 1066 11.03% 12.78%
B 9668 8345 78 78 0.81% 0.93%
C 9668 8346 67 67 0.69% 0.80%
D 9668 8346 190 190 1.97% 2.28%

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 10 251 3458649 16347.53 855 831 211.5
A 15 233 712065 3362.5 855 831 211.5
A 3 14 344359 1624.1 855 831 211.5
B 0 171 708787 3609.39 915 881 196.1
B 4 171 254989 1295.62 915 881 196.1
B 10 247 155780 789.78 915 881 196.1
C 12 252 184478 735.76 902 894 249.5
C 12 254 140052 557.71 902 894 249.5
C 15 208 125768 500.47 902 894 249.5
D 2 249 582170 2323.27 887 847 250.2
D 8 240 229074 912.11 887 847 250.2
D 4 206 108886 431.78 887 847 250.2

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