ASTROSAT CZTI

Data Quality Report

Orbit 57832

Creation date: 2026-06-06T13:15:24.143383
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_125T11_9000006582_57832cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57832cztM0_level2_quad_clean.evt
Size (bytes)520,724,160102,216,960
Size496.6 MB 97.5 MB
Events in quadrant A3,202,802702,413
Events in quadrant B3,689,177724,657
Events in quadrant C8,025,561546,692
Events in quadrant D3,812,531632,690

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149372
B0160273
C0287352
D0161022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70161211.724629%
B70152383.392730%
C7015146420.869565%
D70151462.081254%

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 7751 7017 21 21 0.27% 0.30%
B 7750 7016 78 78 1.01% 1.11%
C 7750 7016 1076 1076 13.88% 15.34%
D 7750 7016 55 55 0.71% 0.78%

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 209242 1098.77 758 736 189.8
A 3 128 31683 163.08 758 736 189.8
A 13 248 10954 53.85 758 736 189.8
B 5 185 224711 1406.9 743 714 159.2
B 6 51 151788 948.88 743 714 159.2
B 0 63 88166 549.28 743 714 159.2
C 9 38 4370153 23406.67 688 679 186.7
C 15 224 722860 3868.62 688 679 186.7
C 6 223 62512 331.23 688 679 186.7
D 12 110 430093 2067.47 735 700 207.7
D 2 153 179464 860.72 735 700 207.7
D 3 12 78476 374.48 735 700 207.7

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