ASTROSAT CZTI

Data Quality Report

Orbit 57722

Creation date: 2026-05-30T02:15:53.149995
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_125T09_9000006578_57722cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57722cztM0_level2_quad_clean.evt
Size (bytes)1,367,697,600256,406,400
Size1.3 GB 244.5 MB
Events in quadrant A9,655,6081,714,542
Events in quadrant B8,869,4181,816,198
Events in quadrant C21,246,9881,428,265
Events in quadrant D9,442,8291,545,049

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417194
B0396794
C0758885
D0408484

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182693752.052658%
B182703531.932129%
C18269319417.483168%
D182692111.154962%

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 19794 18273 62 62 0.31% 0.34%
B 19795 18273 142 142 0.72% 0.78%
C 19794 18272 2645 2645 13.36% 14.48%
D 19794 18273 118 118 0.60% 0.65%

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 11 31 1749984 3628.43 1959 1911 481.8
A 13 248 205254 422.07 1959 1911 481.8
A 3 128 36927 72.68 1959 1911 481.8
B 4 142 278587 672.99 1927 1855 411.2
B 0 213 219883 530.23 1927 1855 411.2
B 10 16 166888 401.35 1927 1855 411.2
C 15 224 9570181 20046.43 1772 1757 477.3
C 12 254 3881170 8127.61 1772 1757 477.3
C 14 254 321060 668.96 1772 1757 477.3
D 3 12 462993 865.75 1894 1807 532.7
D 8 160 296207 552.66 1894 1807 532.7
D 8 240 281358 524.78 1894 1807 532.7

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