ASTROSAT CZTI

Data Quality Report

Orbit 37945

Creation date: 2024-06-27T21:46:29.503033
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/AS1A11_082T01_9000005356_37945cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37945cztM0_level2_quad_clean.evt
Size (bytes)451,376,64079,211,520
Size430.5 MB 75.5 MB
Events in quadrant A3,051,255499,195
Events in quadrant B3,076,494505,152
Events in quadrant C2,907,557512,453
Events in quadrant D4,239,046474,672

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125753
B0130972
C0123502
D0165082

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5820200.343643%
B5820831.426117%
C5820160.274914%
D58202574.415808%

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 7192 5821 7 7 0.10% 0.12%
B 7192 5821 47 47 0.65% 0.81%
C 7192 5821 15 15 0.21% 0.26%
D 7192 5821 217 217 3.02% 3.73%

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 10 83 401328 3070.73 642 630 130.5
A 15 222 112469 857.07 642 630 130.5
A 13 6 19783 146.78 642 630 130.5
B 5 172 204672 1661.87 641 625 122.8
B 4 171 118205 957.64 641 625 122.8
B 4 81 115865 938.58 641 625 122.8
C 15 214 249224 1708.82 625 628 145.5
C 0 10 156041 1068.29 625 628 145.5
C 14 254 27993 188.1 625 628 145.5
D 1 52 1390458 9212.24 616 597 150.9
D 5 32 191803 1267.35 616 597 150.9
D 2 250 126395 833.81 616 597 150.9

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