ASTROSAT CZTI

Data Quality Report

Orbit 20201203_A10_048T02_9000004050_level2

Creation date: 2021-01-07T02:56:32.813949
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A10_048T02_9000004050cztM0_level2_bc.evt modeM0/AS1A10_048T02_9000004050cztM0_level2_quad_clean.evt
Size (bytes)3,545,501,7601,091,986,560
Size3.3 GB 1.0 GB
Events in quadrant A18,075,5617,121,375
Events in quadrant B18,499,2327,130,187
Events in quadrant C19,546,0576,748,073
Events in quadrant D45,706,1466,483,792

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01714420
B01736920
C01810790
D02630500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016680
B016680
C016680
D016680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01170
B01170
C01170
D01170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A815489271.136754%
B8154811701.434738%
C8154816832.063815%
D8154850046.136263%

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 93583 81542 5 5 0.01% 0.01%
B 93583 81537 3 3 0.00% 0.00%
C 93583 81542 6 6 0.01% 0.01%
D 93583 81538 1905 1905 2.04% 2.34%

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 13 254 119181 115.58 4629 4560 991.7
A 6 16 104915 101.2 4629 4560 991.7
A 0 13 77169 73.22 4629 4560 991.7
B 10 245 290645 329.84 4662 4561 867.3
B 4 200 75849 82.19 4662 4561 867.3
B 0 183 73025 78.94 4662 4561 867.3
C 3 233 2372620 2311.48 4421 4427 1024.5
C 10 22 131424 123.96 4421 4427 1024.5
C 2 16 35221 30.06 4421 4427 1024.5
D 8 195 13377040 13328.11 4430 4301 1003.3
D 1 52 12269829 12224.6 4430 4301 1003.3
D 7 80 2675518 2662.3 4430 4301 1003.3

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