ASTROSAT CZTI

Data Quality Report

Orbit 31882

Creation date: 2024-06-27T20:33:57.758915
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/AS1T04_043T01_9000004648_31882cztM0_level2.evt modeM0/AS1T04_043T01_9000004648_31882cztM0_level2_quad_clean.evt
Size (bytes)571,487,04075,444,480
Size545.0 MB 71.9 MB
Events in quadrant A3,314,900460,590
Events in quadrant B5,677,841456,354
Events in quadrant C3,761,083445,038
Events in quadrant D4,080,035434,989

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142102
B0220601
C0155111
D0168151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6997370.528798%
B69971341.915106%
C69971081.543519%
D6997901.286266%

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 7702 6997 0 0 0.00% 0.00%
B 7702 6997 16 16 0.21% 0.23%
C 7702 6997 7 7 0.09% 0.10%
D 7702 6998 51 51 0.66% 0.73%

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 13 6 11845 63.71 855 836 172.8
A 13 254 11353 60.86 855 836 172.8
A 3 137 9076 47.68 855 836 172.8
B 6 159 1915907 11646.86 847 825 164.4
B 10 245 368877 2238.36 847 825 164.4
B 12 111 20831 121.67 847 825 164.4
C 3 233 365709 1879.92 819 824 194.1
C 14 238 136523 699.13 819 824 194.1
C 0 10 32976 165.65 819 824 194.1
D 8 195 540038 2726.55 822 803 197.8
D 12 218 286258 1443.35 822 803 197.8
D 12 233 46122 229.15 822 803 197.8

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