ASTROSAT CZTI

Data Quality Report

Orbit 57092

Creation date: 2026-04-17T18:22:07.019900
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_083T10_9000006566_57092cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57092cztM0_level2_quad_clean.evt
Size (bytes)592,358,400111,925,440
Size564.9 MB 106.7 MB
Events in quadrant A3,824,581744,014
Events in quadrant B3,612,384807,114
Events in quadrant C4,753,724699,966
Events in quadrant D9,130,661594,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168891
B0164650
C0195620
D0326230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7808981.255123%
B78091101.408631%
C78092923.739275%
D7809108713.919836%

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 7808 7808 8 8 0.10% 0.10%
B 7809 7809 17 17 0.22% 0.22%
C 7809 7809 196 196 2.51% 2.51%
D 7809 7809 852 852 10.91% 10.91%

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 4 13 291022 1354.62 867 844 214.2
A 5 113 89807 415.3 867 844 214.2
A 8 4 21065 94.4 867 844 214.2
B 0 213 63336 340.99 853 819 183.3
B 4 171 49421 265.09 853 819 183.3
B 10 247 31185 165.62 853 819 183.3
C 12 252 310424 1372.35 833 825 225.6
C 15 198 281789 1245.42 833 825 225.6
C 14 245 203919 900.25 833 825 225.6
D 15 142 3235874 14361.27 803 769 225.3
D 12 33 2336222 10367.54 803 769 225.3
D 8 240 118759 523.78 803 769 225.3

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