ASTROSAT CZTI

Data Quality Report

Orbit 20180412_G08_039T01_9000002036_level2

Creation date: 2018-04-13T12:17:15.129854
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/AS1G08_039T01_9000002036cztM0_level2_bc.evt modeM0/AS1G08_039T01_9000002036cztM0_level2_quad_clean.evt
Size (bytes)751,884,480301,032,000
Size717.1 MB 287.1 MB
Events in quadrant A4,624,0611,912,826
Events in quadrant B5,840,8962,034,190
Events in quadrant C5,059,1481,853,109
Events in quadrant D5,693,1231,755,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476610
B0509690
C0478590
D0499300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A226866903.041523%
B226867973.513180%
C226865022.212818%
D226865672.499339%

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 24097 22688 3 3 0.01% 0.01%
B 24097 22689 21 21 0.09% 0.09%
C 24097 22689 2 2 0.01% 0.01%
D 24097 22688 9 9 0.04% 0.04%

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 9 143 115232 434.8 1164 1132 262.4
A 1 162 27095 98.94 1164 1132 262.4
A 15 69 9134 30.49 1164 1132 262.4
B 10 244 233823 965.42 1206 1170 241.0
B 4 48 219680 906.73 1206 1170 241.0
B 0 219 188490 777.3 1206 1170 241.0
C 3 233 503861 1991.18 1135 1116 252.5
C 4 254 101594 397.95 1135 1116 252.5
C 13 61 6825 22.61 1135 1116 252.5
D 5 222 504392 1896.66 1131 1086 265.4
D 8 195 358812 1348.05 1131 1086 265.4
D 1 52 168122 629.46 1131 1086 265.4

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