ASTROSAT CZTI

Data Quality Report

Orbit 20170722_G07_020T01_9000001398_level2

Creation date: 2017-09-24T11:46:08.251741
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/AS1G07_020T01_9000001398cztM0_level2.evt modeM0/AS1G07_020T01_9000001398cztM0_level2_quad_clean.evt
Size (bytes)6,867,754,5601,120,662,720
Size6.4 GB 1.0 GB
Events in quadrant A43,761,6346,962,900
Events in quadrant B48,044,0907,045,398
Events in quadrant C43,299,3746,993,052
Events in quadrant D66,535,3646,485,606

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019220
B019160
C019240
D019220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01944400
B02042030
C01940650
D02627750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9429711031.169708%
B9407115931.693402%
C942748210.870866%
D9408536993.931551%

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 111006 94898 38 38 0.03% 0.04%
B 111006 94746 198 198 0.18% 0.21%
C 111006 94910 46 46 0.04% 0.05%
D 111006 94809 2656 2656 2.39% 2.80%

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 14 111 153470 63.07 11219 10998 2258.8
A 8 15 121191 48.78 11219 10998 2258.8
A 0 226 103580 40.99 11219 10998 2258.8
B 4 239 775923 359.48 11291 11029 2127.8
B 0 214 692450 320.25 11291 11029 2127.8
B 4 173 681223 314.98 11291 11029 2127.8
C 10 22 310681 118.74 10942 10990 2523.9
C 0 207 123913 44.74 10942 10990 2523.9
C 14 234 102548 36.28 10942 10990 2523.9
D 5 113 6690184 2610.37 10656 10414 2558.9
D 1 52 5598371 2183.7 10656 10414 2558.9
D 7 46 3622671 1411.62 10656 10414 2558.9

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