ASTROSAT CZTI

Data Quality Report

Orbit 55924

Creation date: 2026-01-30T21:57:34.546952
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_030T02_9000006544_55924cztM0_level2.fits modeM0/AS1A14_030T02_9000006544_55924cztM0_level2_quad_clean.evt
Size (bytes)433,324,80096,779,520
Size413.3 MB 92.3 MB
Events in quadrant A3,327,254641,535
Events in quadrant B3,264,429680,001
Events in quadrant C3,567,283595,157
Events in quadrant D5,369,574554,901

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146441
B0145991
C0157251
D0205361

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6579711.079191%
B65791582.401581%
C65792533.845569%
D65804126.261398%

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 7649 6579 15 15 0.20% 0.23%
B 7649 6579 77 77 1.01% 1.17%
C 7648 6578 191 191 2.50% 2.90%
D 7650 6580 405 405 5.29% 6.16%

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 3 14 238749 1366.69 699 681 174.2
A 12 115 159454 911.48 699 681 174.2
A 7 64 78041 444.11 699 681 174.2
B 10 247 162982 1103.94 685 661 147.0
B 5 185 123903 838.16 685 661 147.0
B 0 199 87627 591.45 685 661 147.0
C 15 199 449921 2439.99 670 664 184.1
C 13 3 374014 2027.73 670 664 184.1
C 12 252 103750 559.88 670 664 184.1
D 11 129 1982768 10446.39 671 641 189.7
D 7 96 212904 1118.69 671 641 189.7
D 12 16 178984 939.92 671 641 189.7

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