ASTROSAT CZTI

Data Quality Report

Orbit 57338

Creation date: 2026-05-04T04:51:24.452515
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_102T01_9000006572_57338cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57338cztM0_level2_quad_clean.evt
Size (bytes)553,521,60086,826,240
Size527.9 MB 82.8 MB
Events in quadrant A3,565,482579,827
Events in quadrant B5,166,656574,344
Events in quadrant C4,848,204531,321
Events in quadrant D6,377,864465,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157591
B0203201
C0192461
D0237441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6844761.110462%
B684590313.192111%
C68453374.923302%
D68456829.963477%

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 7844 7120 39 39 0.50% 0.55%
B 7845 7121 643 643 8.20% 9.03%
C 7845 7121 271 271 3.45% 3.81%
D 7845 7121 603 603 7.69% 8.47%

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 0 12 635462 3545.85 729 711 179.0
A 3 14 64431 355.95 729 711 179.0
A 13 248 15919 84.95 729 711 179.0
B 5 185 2058573 14240.99 671 646 144.5
B 10 16 148734 1024.78 671 646 144.5
B 7 252 138341 952.86 671 646 144.5
C 15 224 1379942 7368.9 687 681 187.2
C 12 252 330559 1762.42 687 681 187.2
C 6 223 233008 1241.24 687 681 187.2
D 3 224 1973191 10404.79 672 641 189.6
D 5 32 591607 3117.22 672 641 189.6
D 15 142 395544 2083.03 672 641 189.6

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