ASTROSAT CZTI

Data Quality Report

Orbit 59303

Creation date: 2026-09-13T10:03:33.604648
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_021T06_9000006606_59303cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59303cztM0_level2_quad_clean.evt
Size (bytes)717,376,320123,503,040
Size684.1 MB 117.8 MB
Events in quadrant A3,917,629841,877
Events in quadrant B9,005,325797,195
Events in quadrant C4,465,435805,580
Events in quadrant D8,487,656686,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184020
B0328770
C0197310
D0313700

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8761660.753339%
B8762153117.473180%
C87621231.403789%
D876195910.946239%

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 8761 8761 61 61 0.70% 0.70%
B 8762 8762 1093 1093 12.47% 12.47%
C 8762 8762 123 123 1.40% 1.40%
D 8761 8761 883 883 10.08% 10.08%

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 8 206 192700 826.07 939 912 232.2
A 4 3 21629 89.23 939 912 232.2
A 7 64 19014 77.97 939 912 232.2
B 5 236 3748975 19784.73 891 858 189.4
B 4 236 1409477 7435.51 891 858 189.4
B 6 255 117548 615.96 891 858 189.4
C 12 252 617366 2437.71 926 918 252.9
C 4 5 167622 659.22 926 918 252.9
C 6 13 14239 52.68 926 918 252.9
D 11 129 2277510 9117.61 884 844 249.7
D 12 110 1434933 5743.25 884 844 249.7
D 12 2 976515 3907.37 884 844 249.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct