ASTROSAT CZTI

Data Quality Report

Orbit 57393

Creation date: 2026-05-07T21:07:36.420907
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_57393cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57393cztM0_level2_quad_clean.evt
Size (bytes)428,071,68086,155,200
Size408.2 MB 82.2 MB
Events in quadrant A2,746,769589,246
Events in quadrant B2,749,268628,650
Events in quadrant C6,872,328456,267
Events in quadrant D3,022,985525,998

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122131
B0123581
C0245231
D0130661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5839771.318719%
B5840791.352740%
C5840130122.277397%
D58401051.797945%

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 6989 5840 2 2 0.03% 0.03%
B 6990 5841 7 7 0.10% 0.12%
C 6990 5841 1013 1013 14.49% 17.34%
D 6990 5841 51 51 0.73% 0.87%

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 8 4 101993 630.47 652 637 160.8
A 3 14 66341 408.7 652 637 160.8
A 0 12 37688 230.47 652 637 160.8
B 5 185 79922 583.19 635 614 136.0
B 0 245 31196 224.88 635 614 136.0
B 0 153 30896 222.68 635 614 136.0
C 15 224 4213578 27791.79 552 548 151.6
C 12 2 129594 851.27 552 548 151.6
C 14 254 109469 718.51 552 548 151.6
D 3 224 115519 647.5 624 594 177.5
D 8 240 108955 610.51 624 594 177.5
D 2 249 76724 428.92 624 594 177.5

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