ASTROSAT CZTI

Data Quality Report

Orbit 59182

Creation date: 2026-09-07T10:47:30.223888
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/AS1T05_271T01_9000006604_59182cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59182cztM0_level2_quad_clean.evt
Size (bytes)520,853,76095,915,520
Size496.7 MB 91.5 MB
Events in quadrant A3,135,857652,542
Events in quadrant B3,601,157689,367
Events in quadrant C3,052,500633,433
Events in quadrant D9,000,652488,255

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138862
B0151492
C0135902
D0312077

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6316390.617479%
B63162183.451552%
C6316200.316656%
D6315128520.348377%

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 7571 6317 29 29 0.38% 0.46%
B 7571 6317 135 135 1.78% 2.14%
C 7571 6317 7 7 0.09% 0.11%
D 7570 6316 1336 1336 17.65% 21.15%

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 10 251 186873 1080.97 701 686 172.2
A 3 14 163600 945.85 701 686 172.2
A 3 245 43564 248.94 701 686 172.2
B 4 236 620407 4159.76 691 666 149.0
B 4 171 88013 586.28 691 666 149.0
B 5 185 33138 217.95 691 666 149.0
C 3 233 206625 1066.56 697 692 193.1
C 14 254 40650 206.95 697 692 193.1
C 12 252 39447 200.72 697 692 193.1
D 12 110 4783254 26412.41 638 611 181.1
D 11 129 868788 4794.56 638 611 181.1
D 1 27 454467 2506.45 638 611 181.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct