ASTROSAT CZTI

Data Quality Report

Orbit 12698

Creation date: 2024-06-27T16:31:14.688417
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/AS1A04_174T01_9000001876_12698cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12698cztM0_level2_quad_clean.evt
Size (bytes)590,558,400104,492,160
Size563.2 MB 99.7 MB
Events in quadrant A3,619,739692,788
Events in quadrant B6,438,946586,611
Events in quadrant C3,631,637691,707
Events in quadrant D3,676,013661,175

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158842
B0241781
C0159651
D0163061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7648450.588389%
B7648119315.598849%
C7648420.549163%
D7648410.536088%

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 8559 7651 0 0 0.00% 0.00%
B 8559 7651 935 935 10.92% 12.22%
C 8559 7651 9 9 0.11% 0.12%
D 8559 7651 15 15 0.18% 0.20%

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 15 24306 121.41 930 909 192.7
A 12 189 18413 90.83 930 909 192.7
A 15 174 8571 39.76 930 909 192.7
B 4 239 2892985 17729.05 845 826 163.1
B 3 209 88808 539.33 845 826 163.1
B 0 219 34053 203.68 845 826 163.1
C 15 208 86697 402.41 907 916 213.2
C 14 234 6524 26.31 907 916 213.2
C 13 61 6463 26.02 907 916 213.2
D 1 52 52788 219.43 894 877 236.6
D 13 249 41984 173.76 894 877 236.6
D 13 104 34540 142.29 894 877 236.6

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