ASTROSAT CZTI

Data Quality Report

Orbit 56284

Creation date: 2026-02-23T22:55:38.479666
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_049T01_9000006552_56284cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56284cztM0_level2_quad_clean.evt
Size (bytes)765,685,44070,369,920
Size730.2 MB 67.1 MB
Events in quadrant A14,965,645151,668
Events in quadrant B3,528,421556,218
Events in quadrant C5,532,772478,424
Events in quadrant D3,798,307478,437

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0490291
B0153041
C0211861
D0161091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6676490173.412223%
B66761722.576393%
C66776369.525236%
D66771442.156657%

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 7824 6811 4783 4783 61.13% 70.22%
B 7824 6960 113 113 1.44% 1.62%
C 7825 6960 550 550 7.03% 7.90%
D 7825 6961 143 143 1.83% 2.05%

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 15 32 8358243 76345.99 432 421 109.5
A 8 176 2952941 26970.31 432 421 109.5
A 12 115 774279 7068.94 432 421 109.5
B 5 185 469614 3150.56 686 661 148.8
B 0 63 68416 455.2 686 661 148.8
B 0 213 60239 400.26 686 661 148.8
C 5 250 1605547 9053.47 641 635 177.3
C 12 254 819824 4621.13 641 635 177.3
C 12 252 299694 1687.02 641 635 177.3
D 2 249 468214 2482.1 664 637 188.4
D 7 77 143127 756.4 664 637 188.4
D 8 129 92086 485.45 664 637 188.4

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