ASTROSAT CZTI

Data Quality Report

Orbit 20170619_G07_022T01_9000001322_level2

Creation date: 2017-09-24T06:16:45.705791
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_022T01_9000001322cztM0_level2.evt modeM0/AS1G07_022T01_9000001322cztM0_level2_quad_clean.evt
Size (bytes)210,697,92047,013,120
Size200.9 MB 44.8 MB
Events in quadrant A2,110,766306,763
Events in quadrant B1,334,136311,485
Events in quadrant C1,374,287308,948
Events in quadrant D1,376,814303,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01600
C01600
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081460
B057300
C062220
D060840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2696742.744807%
B2696100.370920%
C269650.185460%
D2696461.706231%

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 2696 2696 51 51 1.89% 1.89%
B 2696 2696 5 5 0.19% 0.19%
C 2696 2696 1 1 0.04% 0.04%
D 2696 2696 45 45 1.67% 1.67%

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 8 5 922005 15122.32 292 285 61.0
A 13 251 21513 348.28 292 285 61.0
A 15 174 17265 278.58 292 285 61.0
B 0 214 35129 607.27 290 284 57.4
B 0 219 32506 561.55 290 284 57.4
B 4 173 31116 537.33 290 284 57.4
C 9 68 280965 4298.65 277 277 65.3
C 14 234 8533 126.44 277 277 65.3
C 13 61 2133 28.42 277 277 65.3
D 10 199 111078 1446.38 278 272 76.6
D 7 71 45930 595.99 278 272 76.6
D 12 227 35617 461.37 278 272 76.6

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