ASTROSAT CZTI

Data Quality Report

Orbit 57592

Creation date: 2026-05-21T07:35:39.854548
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_070T08_9000006576_57592cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57592cztM0_level2_quad_clean.evt
Size (bytes)562,636,80083,076,480
Size536.6 MB 79.2 MB
Events in quadrant A3,505,922557,967
Events in quadrant B3,450,056592,341
Events in quadrant C3,739,928537,383
Events in quadrant D9,596,322348,445

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150982
B0152612
C0160672
D0332852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68791191.729903%
B68801992.892442%
C68801422.063953%
D6880224032.558140%

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 8809 7166 48 48 0.54% 0.67%
B 8810 7162 93 93 1.06% 1.30%
C 8810 7167 83 83 0.94% 1.16%
D 8810 7088 2041 2041 23.17% 28.80%

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 4 249 316652 1731.22 736 716 182.5
A 3 14 234007 1278.36 736 716 182.5
A 3 128 80028 434.6 736 716 182.5
B 2 249 344641 2217.44 727 700 155.1
B 10 16 85833 548.87 727 700 155.1
B 0 63 43418 275.41 727 700 155.1
C 15 224 731539 3759.48 717 710 194.4
C 14 245 96915 494.89 717 710 194.4
C 14 246 39420 199.13 717 710 194.4
D 15 142 6493853 39527.21 580 554 164.3
D 2 249 322194 1957.95 580 554 164.3
D 8 240 93934 568.44 580 554 164.3

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