ASTROSAT CZTI

Data Quality Report

Orbit 56163

Creation date: 2026-02-14T04:12:12.990298
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_083T04_9000006550_56163cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56163cztM0_level2_quad_clean.evt
Size (bytes)717,327,36098,481,600
Size684.1 MB 93.9 MB
Events in quadrant A6,599,615618,412
Events in quadrant B3,760,673754,192
Events in quadrant C3,356,838668,702
Events in quadrant D12,248,566413,535

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249751
B0166490
C0160090
D0416650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7575100413.254125%
B7576510.673178%
C7576150.197994%
D7576278836.800422%

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 7575 7575 725 725 9.57% 9.57%
B 7576 7576 30 30 0.40% 0.40%
C 7576 7576 13 13 0.17% 0.17%
D 7576 7576 2950 2950 38.94% 38.94%

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 9 250 1475040 7900.77 741 721 186.6
A 7 64 814227 4359.52 741 721 186.6
A 15 32 530150 2837.17 741 721 186.6
B 10 247 199101 1178.64 782 755 168.3
B 0 213 126979 750.07 782 755 168.3
B 8 128 93922 553.63 782 755 168.3
C 12 252 298235 1410.73 760 751 210.9
C 15 230 22260 102.0 760 751 210.9
C 6 9 15179 68.42 760 751 210.9
D 8 240 8021437 44285.35 623 593 181.1
D 8 129 751130 4143.93 623 593 181.1
D 2 249 430590 2374.14 623 593 181.1

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