ASTROSAT CZTI

Data Quality Report

Orbit 08791

Creation date: 2024-06-27T15:37:17.476733
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/AS1G07_010T03_9000001224_08791cztM0_level2.evt modeM0/AS1G07_010T03_9000001224_08791cztM0_level2_quad_clean.evt
Size (bytes)696,807,36095,567,040
Size664.5 MB 91.1 MB
Events in quadrant A3,759,272616,529
Events in quadrant B3,734,749625,857
Events in quadrant C3,524,513622,915
Events in quadrant D9,563,678492,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01584

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163965
B0163234
C0159882
D03391117

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76981351.753702%
B76981552.013510%
C7699540.701390%
D7697200726.075094%

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 8109 7702 19 19 0.23% 0.25%
B 8109 7701 7 7 0.09% 0.09%
C 8109 7702 3 3 0.04% 0.04%
D 8109 7697 1629 1629 20.09% 21.16%

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 15 223 109733 589.9 907 886 184.5
A 8 5 51675 275.25 907 886 184.5
A 15 239 35481 187.49 907 886 184.5
B 4 173 143392 808.37 916 892 176.3
B 4 80 23608 128.86 916 892 176.3
B 12 111 20303 110.11 916 892 176.3
C 14 234 26583 122.77 894 895 209.2
C 14 67 9566 41.44 894 895 209.2
C 13 61 6901 28.71 894 895 209.2
D 2 16 6044697 31182.66 789 766 193.8
D 2 152 188553 968.86 789 766 193.8
D 2 14 104739 536.43 789 766 193.8

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