ASTROSAT CZTI

Data Quality Report

Orbit 58095

Creation date: 2026-06-24T03:16:29.067643
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_042T02_9000006586_58095cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58095cztM0_level2_quad_clean.evt
Size (bytes)858,274,560101,373,120
Size818.5 MB 96.7 MB
Events in quadrant A3,568,733771,659
Events in quadrant B13,809,281468,124
Events in quadrant C4,060,418725,519
Events in quadrant D9,721,004554,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164322
B0465222
C0176902
D0345242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7895250.316656%
B7895390449.449018%
C7895971.228626%
D7894160220.293894%

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 7910 7896 1 1 0.01% 0.01%
B 7910 7896 3242 3242 40.99% 41.06%
C 7910 7896 80 80 1.01% 1.01%
D 7909 7895 1696 1696 21.44% 21.48%

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 61 40940 183.98 885 861 217.8
A 2 79 28946 128.92 885 861 217.8
A 3 11 19523 85.67 885 861 217.8
B 10 128 9121016 56351.69 749 719 161.8
B 5 172 1398946 8639.24 749 719 161.8
B 0 156 56509 344.71 749 719 161.8
C 12 252 225951 973.62 849 841 231.2
C 12 254 198715 855.82 849 841 231.2
C 13 3 141383 607.85 849 841 231.2
D 12 110 6009536 26591.68 797 761 226.0
D 8 240 180996 797.63 797 761 226.0
D 12 1 82422 361.39 797 761 226.0

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