ASTROSAT CZTI

Data Quality Report

Orbit 57536

Creation date: 2026-05-17T12:11:50.731451
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_113T09_9000006574_57536cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57536cztM0_level2_quad_clean.evt
Size (bytes)424,578,240105,079,680
Size404.9 MB 100.2 MB
Events in quadrant A3,467,776690,300
Events in quadrant B3,558,682733,567
Events in quadrant C4,030,727651,899
Events in quadrant D4,109,631613,908

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152672
B0154582
C0169032
D0171852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70651011.429582%
B70651692.392074%
C70661632.306821%
D70662062.915369%

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 8990 7066 24 24 0.27% 0.34%
B 8990 7066 32 32 0.36% 0.45%
C 8991 7067 62 62 0.69% 0.88%
D 8991 7067 136 136 1.51% 1.92%

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 302202 1562.64 781 760 192.9
A 4 249 95780 492.57 781 760 192.9
A 4 95 40646 206.76 781 760 192.9
B 5 185 102884 621.38 768 740 164.4
B 4 67 90929 548.66 768 740 164.4
B 10 247 67500 406.13 768 740 164.4
C 15 224 809379 3875.7 762 754 208.6
C 14 96 80852 383.9 762 754 208.6
C 6 223 52825 249.57 762 754 208.6
D 15 142 406506 1893.83 757 723 214.3
D 2 31 211080 981.76 757 723 214.3
D 8 160 132097 613.14 757 723 214.3

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