ASTROSAT CZTI

Data Quality Report

Orbit 53468

Creation date: 2025-08-16T17:56:17.714674
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_002T06_9000006496_53468cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53468cztM0_level2_quad_clean.evt
Size (bytes)772,735,68081,233,280
Size736.9 MB 77.5 MB
Events in quadrant A8,953,461467,149
Events in quadrant B3,421,134681,016
Events in quadrant C11,614,655314,668
Events in quadrant D4,124,295554,623

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0309915
B0145381
C0387131
D0166191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6336203932.181187%
B63371322.083005%
C6337330152.090895%
D63371933.045605%

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 7416 6337 1741 1741 23.48% 27.47%
B 7417 6338 45 45 0.61% 0.71%
C 7417 6337 3100 3100 41.80% 48.92%
D 7417 6338 199 199 2.68% 3.14%

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 62 3804066 25100.13 614 600 151.5
A 3 63 1202643 7932.62 614 600 151.5
A 15 174 905483 5971.57 614 600 151.5
B 2 249 195349 1305.39 696 672 149.1
B 5 185 163788 1093.76 696 672 149.1
B 4 81 62764 416.35 696 672 149.1
C 1 241 6959684 51781.43 485 478 134.4
C 15 224 1407317 10467.88 485 478 134.4
C 15 178 807738 6006.58 485 478 134.4
D 2 249 488031 2539.39 677 649 191.9
D 3 12 478891 2491.77 677 649 191.9
D 8 176 199035 1033.64 677 649 191.9

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