ASTROSAT CZTI

Data Quality Report

Orbit 53296

Creation date: 2025-08-05T04:03:09.906976
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/AS1C09_011T08_9000006492_53296cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53296cztM0_level2_quad_clean.evt
Size (bytes)600,652,80086,558,400
Size572.8 MB 82.5 MB
Events in quadrant A3,207,561623,608
Events in quadrant B3,954,908668,631
Events in quadrant C10,539,199345,311
Events in quadrant D4,048,984548,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139342
B0159522
C0355332
D0163794

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62271111.782560%
B62272393.838124%
C6227287646.185964%
D62263315.316415%

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 7467 6228 51 51 0.68% 0.82%
B 7467 6228 141 141 1.89% 2.26%
C 7467 6228 2661 2661 35.64% 42.73%
D 7466 6227 243 243 3.25% 3.90%

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 8 202181 1195.3 664 647 168.6
A 4 3 129628 764.99 664 647 168.6
A 15 174 68619 403.14 664 647 168.6
B 4 81 775137 5564.48 663 641 139.2
B 10 28 129364 924.83 663 641 139.2
B 4 170 84913 605.46 663 641 139.2
C 1 241 5878020 42581.49 502 499 138.0
C 15 224 1184586 8578.48 502 499 138.0
C 9 38 747597 5412.58 502 499 138.0
D 11 176 532049 2924.0 636 608 181.8
D 3 12 247348 1357.57 636 608 181.8
D 6 239 117131 641.11 636 608 181.8

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