ASTROSAT CZTI

Data Quality Report

Orbit 58531

Creation date: 2026-07-23T12:06:56.156542
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_044T04_9000006592_58531cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58531cztM0_level2_quad_clean.evt
Size (bytes)620,648,640112,383,360
Size591.9 MB 107.2 MB
Events in quadrant A3,963,612756,224
Events in quadrant B4,579,530796,628
Events in quadrant C6,968,419665,946
Events in quadrant D6,834,032621,005

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176191
B0191092
C0263411
D0261861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81012613.221824%
B81004425.456790%
C810199212.245402%
D810196211.875077%

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 8781 8102 7 7 0.08% 0.09%
B 8780 8100 52 52 0.59% 0.64%
C 8781 8101 849 849 9.67% 10.48%
D 8781 8102 813 813 9.26% 10.03%

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 17 89552 380.88 946 919 232.7
A 10 251 71812 304.65 946 919 232.7
A 12 114 32166 134.28 946 919 232.7
B 8 234 215232 1062.96 932 898 201.6
B 0 171 211714 1045.51 932 898 201.6
B 10 247 103293 507.81 932 898 201.6
C 4 5 1970600 8239.68 871 861 239.1
C 5 10 804951 3363.62 871 861 239.1
C 12 252 237285 988.99 871 861 239.1
D 3 12 1254368 5184.19 846 806 241.8
D 2 249 1237690 5115.22 846 806 241.8
D 8 240 332260 1370.75 846 806 241.8

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