ASTROSAT CZTI

Data Quality Report

Orbit 57597

Creation date: 2026-05-21T14:30:36.174517
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_070T08_9000006576_57597cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57597cztM0_level2_quad_clean.evt
Size (bytes)404,461,440100,788,480
Size385.7 MB 96.1 MB
Events in quadrant A3,244,633666,805
Events in quadrant B3,369,092719,312
Events in quadrant C3,190,781645,238
Events in quadrant D4,660,282566,605

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139686
B0143172
C0141362
D0184012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65111241.904469%
B65121482.272727%
C6512971.489558%
D65125097.816339%

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 7636 6512 16 16 0.21% 0.25%
B 7637 6513 10 10 0.13% 0.15%
C 7637 6513 19 19 0.25% 0.29%
D 7637 6512 364 364 4.77% 5.59%

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 220716 1220.42 736 719 180.3
A 7 160 117435 647.48 736 719 180.3
A 3 128 34084 185.09 736 719 180.3
B 0 63 224640 1475.64 722 696 151.8
B 7 252 46387 301.07 722 696 151.8
B 10 16 36323 234.76 722 696 151.8
C 15 224 226584 1151.68 721 716 196.1
C 14 254 89224 451.29 721 716 196.1
C 12 2 35997 179.89 721 716 196.1
D 8 160 902474 4603.53 696 666 195.9
D 15 142 467116 2381.13 696 666 195.9
D 2 249 223697 1138.52 696 666 195.9

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