ASTROSAT CZTI

Data Quality Report

Orbit 20180809_G08_039T01_9000002292_level2

Creation date: 2018-08-11T09:40:33.282887
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_9000002292cztM0_level2_bc.evt modeM0/AS1G08_039T01_9000002292cztM0_level2_quad_clean.evt
Size (bytes)874,854,720280,002,240
Size834.3 MB 267.0 MB
Events in quadrant A6,210,5271,718,001
Events in quadrant B5,888,6271,753,399
Events in quadrant C5,759,4401,685,220
Events in quadrant D6,972,4701,648,997

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0556040
B0533630
C0526980
D0565040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04960
B04960
C04960
D04960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A243385172.124250%
B243382961.216205%
C243381600.657408%
D243383771.549018%

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 26934 24339 23 23 0.09% 0.09%
B 26934 24339 12 12 0.04% 0.05%
C 26934 24339 0 0 0.00% 0.00%
D 26934 24339 66 66 0.25% 0.27%

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 14 237 715518 2691.79 1206 1181 265.4
A 14 238 634245 2385.53 1206 1181 265.4
A 4 2 112491 419.44 1206 1181 265.4
B 10 245 610207 2604.36 1221 1190 233.8
B 4 142 160174 679.87 1221 1190 233.8
B 0 189 111582 472.07 1221 1190 233.8
C 3 233 1192073 4322.2 1163 1151 275.5
C 9 54 36111 126.88 1163 1151 275.5
C 10 22 17030 57.63 1163 1151 275.5
D 5 222 926320 3313.53 1184 1139 279.2
D 1 52 512555 1831.63 1184 1139 279.2
D 10 70 318003 1134.85 1184 1139 279.2

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