ASTROSAT CZTI

Data Quality Report

Orbit 55937

Creation date: 2026-02-05T12:41:25.593217
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_030T02_9000006544_55937cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55937cztM0_level2_quad_clean.evt
Size (bytes)422,809,920100,267,200
Size403.2 MB 95.6 MB
Events in quadrant A3,216,220672,149
Events in quadrant B3,485,578700,447
Events in quadrant C3,466,708621,066
Events in quadrant D4,972,788585,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143701
B0153741
C0152991
D0192801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65541081.647849%
B65552113.218917%
C65551311.998474%
D65552854.347826%

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 7464 6555 14 14 0.19% 0.21%
B 7464 6555 100 100 1.34% 1.53%
C 7464 6555 54 54 0.72% 0.82%
D 7464 6555 212 212 2.84% 3.23%

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 297797 1642.24 711 691 180.9
A 7 64 74768 409.46 711 691 180.9
A 3 14 42668 232.02 711 691 180.9
B 5 185 675568 4548.63 688 666 148.4
B 10 247 23590 154.5 688 666 148.4
B 12 111 17394 112.74 688 666 148.4
C 14 80 435294 2303.39 677 669 188.7
C 12 252 184364 973.53 677 669 188.7
C 6 223 94987 499.86 677 669 188.7
D 11 129 1050646 5383.73 680 649 195.0
D 6 42 512159 2622.71 680 649 195.0
D 15 234 217434 1111.54 680 649 195.0

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