ASTROSAT CZTI

Data Quality Report

Orbit 56099

Creation date: 2026-02-09T20:58:42.597795
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_083T03_9000006548_56099cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56099cztM0_level2_quad_clean.evt
Size (bytes)523,445,76099,213,120
Size499.2 MB 94.6 MB
Events in quadrant A4,628,393651,059
Events in quadrant B3,447,932728,195
Events in quadrant C5,179,245592,616
Events in quadrant D5,599,298564,731

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182732
B0148032
C0203732
D0212922

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67133435.109489%
B6713961.430061%
C67136699.965738%
D67136048.997468%

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 7863 6714 283 283 3.60% 4.22%
B 7863 6714 22 22 0.28% 0.33%
C 7863 6714 453 453 5.76% 6.75%
D 7863 6714 606 606 7.71% 9.03%

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 15 32 816236 4489.09 734 716 181.7
A 12 115 712415 3917.6 734 716 181.7
A 3 14 152280 834.29 734 716 181.7
B 4 21 194570 1239.79 734 708 156.4
B 5 185 98323 624.27 734 708 156.4
B 7 252 51968 327.82 734 708 156.4
C 12 254 2014854 10724.01 680 672 187.8
C 12 252 302116 1604.96 680 672 187.8
C 15 230 81627 431.02 680 672 187.8
D 8 129 1005734 5085.89 698 666 197.6
D 8 240 942884 4767.86 698 666 197.6
D 2 120 350816 1771.85 698 666 197.6

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