ASTROSAT CZTI

Data Quality Report

Orbit 45638

Creation date: 2024-06-27T23:14:29.352074
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_071T08_9000006114_45638cztM0_level2.fits modeM0/AS1A13_071T08_9000006114_45638cztM0_level2_quad_clean.evt
Size (bytes)653,123,520129,052,800
Size622.9 MB 123.1 MB
Events in quadrant A7,255,333855,854
Events in quadrant B4,558,192875,485
Events in quadrant C3,732,274858,078
Events in quadrant D8,002,998753,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272421
B0192302
C0171651
D0295981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81103344.118372%
B81093374.155876%
C8109740.912566%
D81105366.609125%

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 8350 8112 30 30 0.36% 0.37%
B 8349 8110 113 113 1.35% 1.39%
C 8349 8111 24 24 0.29% 0.30%
D 8350 8111 327 327 3.92% 4.03%

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 10 83 3391624 17657.21 918 894 192.0
A 10 248 91558 472.13 918 894 192.0
A 12 189 86405 445.3 918 894 192.0
B 3 112 612717 3408.67 917 889 179.5
B 15 35 66750 366.93 917 889 179.5
B 0 183 41243 224.82 917 889 179.5
C 14 254 186805 879.32 899 900 211.4
C 2 14 13682 60.46 899 900 211.4
C 12 2 7661 31.98 899 900 211.4
D 11 241 2299660 10168.21 883 853 226.1
D 1 52 999097 4415.49 883 853 226.1
D 8 129 314583 1387.71 883 853 226.1

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