ASTROSAT CZTI

Data Quality Report

Orbit 20200215_A07_054T01_9000003504_level2

Creation date: 2020-02-18T10:30:45.821473
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/AS1A07_054T01_9000003504cztM0_level2_bc.evt modeM0/AS1A07_054T01_9000003504cztM0_level2_quad_clean.evt
Size (bytes)2,748,070,0801,409,924,160
Size2.6 GB 1.3 GB
Events in quadrant A14,850,5389,612,612
Events in quadrant B19,508,3399,662,761
Events in quadrant C15,224,9479,398,048
Events in quadrant D28,648,0929,010,639

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01499780
B01641640
C01527720
D01946410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014940
B014940
C014940
D014940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A733095120.698414%
B7330918142.474457%
C7330910151.384550%
D7330922563.077385%

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 84934 73304 0 0 0.00% 0.00%
B 84934 73302 621 621 0.73% 0.85%
C 84934 73301 17 17 0.02% 0.02%
D 84934 73300 449 449 0.53% 0.61%

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 110786 128.29 3847 3781 834.1
A 0 226 24733 25.12 3847 3781 834.1
A 12 194 23501 23.64 3847 3781 834.1
B 14 207 2891412 3983.7 3867 3780 724.9
B 0 229 483295 661.53 3867 3780 724.9
B 15 33 351910 480.27 3867 3780 724.9
C 7 247 618144 687.91 3748 3730 893.2
C 8 30 72434 76.92 3748 3730 893.2
C 8 13 45582 46.86 3748 3730 893.2
D 1 52 9990559 11354.93 3754 3626 879.5
D 7 238 2039247 2314.46 3754 3626 879.5
D 13 174 737978 834.94 3754 3626 879.5

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