ASTROSAT CZTI

Data Quality Report

Orbit 20161120_G06_103T01_9000000812_level2

Creation date: 2017-09-19T04:08:27.550079
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/AS1G06_103T01_9000000812cztM0_level2.evt modeM0/AS1G06_103T01_9000000812cztM0_level2_quad_clean.evt
Size (bytes)5,160,859,2001,040,832,000
Size4.8 GB 992.6 MB
Events in quadrant A39,017,8086,560,553
Events in quadrant B38,519,8836,687,729
Events in quadrant C35,840,3806,547,290
Events in quadrant D37,529,0336,261,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01696890
B01678740
C01628880
D01683530

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01270
C01250
D01260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016220
B016300
C016320
D016260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A797478871.112268%
B7973110551.323199%
C797975320.666692%
D798376710.840462%

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 100084 80683 17 17 0.02% 0.02%
B 100084 80630 129 129 0.13% 0.16%
C 100084 80690 0 0 0.00% 0.00%
D 100084 80696 93 93 0.09% 0.12%

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 15 236 998798 525.82 9329 9131 1882.1
A 8 15 952308 501.12 9329 9131 1882.1
A 13 34 666898 349.48 9329 9131 1882.1
B 0 219 665372 372.86 9403 9182 1759.9
B 0 214 342657 189.49 9403 9182 1759.9
B 15 204 302719 166.79 9403 9182 1759.9
C 1 16 286423 132.66 9102 9148 2090.1
C 13 61 72113 30.13 9102 9148 2090.1
C 9 54 34182 11.98 9102 9148 2090.1
D 2 136 804169 355.15 9144 8867 2239.4
D 2 63 553902 243.39 9144 8867 2239.4
D 5 97 423995 185.38 9144 8867 2239.4

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