ASTROSAT CZTI

Data Quality Report

Orbit 45958

Creation date: 2024-06-27T23:18:11.926752
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/AS1A13_071T06_9000006146_45958cztM0_level2.fits modeM0/AS1A13_071T06_9000006146_45958cztM0_level2_quad_clean.evt
Size (bytes)812,908,800127,488,960
Size775.3 MB 121.6 MB
Events in quadrant A7,124,564872,857
Events in quadrant B8,964,661829,156
Events in quadrant C3,703,420867,844
Events in quadrant D9,661,812716,262

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259930
B0324320
C0171170
D0343950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82511541.866440%
B8251113113.707429%
C825280.096946%
D8252104212.627242%

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 8251 8251 2 2 0.02% 0.02%
B 8251 8251 885 885 10.73% 10.73%
C 8252 8252 7 7 0.08% 0.08%
D 8252 8252 889 889 10.77% 10.77%

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 10 83 3407747 17276.35 935 913 197.2
A 14 235 43109 213.98 935 913 197.2
A 0 247 25863 126.52 935 913 197.2
B 3 112 4768377 26892.55 896 868 177.3
B 4 21 493742 2780.2 896 868 177.3
B 0 186 46152 255.44 896 868 177.3
C 14 254 50848 231.96 917 920 215.2
C 2 14 33376 150.79 917 920 215.2
C 3 9 23596 105.35 917 920 215.2
D 11 241 5047777 22685.25 880 854 222.5
D 1 52 731447 3283.92 880 854 222.5
D 13 249 136658 610.42 880 854 222.5

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