ASTROSAT CZTI

Data Quality Report

Orbit 20200314_A07_134T02_9000003568_level2

Creation date: 2020-03-17T11:37:41.428856
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/AS1A07_134T02_9000003568cztM0_level2_bc.evt modeM0/AS1A07_134T02_9000003568cztM0_level2_quad_clean.evt
Size (bytes)832,872,960304,718,400
Size794.3 MB 290.6 MB
Events in quadrant A4,858,2791,929,743
Events in quadrant B5,166,7381,951,292
Events in quadrant C4,865,1221,876,134
Events in quadrant D8,687,3241,815,830

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497360
B0507340
C0502070
D0619720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240692030.843409%
B240692861.188250%
C240693511.458307%
D240694791.990112%

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 26269 24068 0 0 0.00% 0.00%
B 26269 24069 4 4 0.02% 0.02%
C 26269 24069 2 2 0.01% 0.01%
D 26269 24069 89 89 0.34% 0.37%

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 3 1 91105 331.57 1227 1197 271.2
A 13 254 35831 127.73 1227 1197 271.2
A 2 250 28700 101.43 1227 1197 271.2
B 0 189 66171 273.82 1235 1203 237.3
B 4 171 64009 264.7 1235 1203 237.3
B 0 190 60934 251.74 1235 1203 237.3
C 7 247 159539 561.44 1183 1171 282.1
C 10 9 106165 372.22 1183 1171 282.1
C 3 233 46163 159.5 1183 1171 282.1
D 8 195 1870795 6426.21 1208 1160 290.9
D 1 52 1209985 4154.91 1208 1160 290.9
D 12 218 322372 1104.05 1208 1160 290.9

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