ASTROSAT CZTI

Data Quality Report

Orbit 20190205_A05_103T01_9000002700_level2

Creation date: 2019-02-06T10:08:53.829058
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/AS1A05_103T01_9000002700cztM0_level2_bc.evt modeM0/AS1A05_103T01_9000002700cztM0_level2_quad_clean.evt
Size (bytes)740,329,920233,795,520
Size706.0 MB 223.0 MB
Events in quadrant A4,468,0911,475,258
Events in quadrant B4,407,3951,491,520
Events in quadrant C4,044,8121,443,253
Events in quadrant D8,252,3541,413,741

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0402560
B0401830
C0392110
D0545970

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182493872.120664%
B182493571.956272%
C182493742.049427%
D1824911136.098964%

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 23174 18249 17 17 0.07% 0.09%
B 23174 18251 1 1 0.00% 0.01%
C 23174 18250 0 0 0.00% 0.00%
D 23174 18249 55 55 0.24% 0.30%

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 15 174 244934 1052.06 1079 1059 231.8
A 4 2 87836 374.35 1079 1059 231.8
A 0 226 7156 26.3 1079 1059 231.8
B 7 220 121762 608.27 1079 1056 198.4
B 0 189 34301 167.53 1079 1056 198.4
B 0 229 32152 156.7 1079 1056 198.4
C 3 233 23019 91.91 1037 1034 239.2
C 5 218 18270 72.06 1037 1034 239.2
C 0 207 9299 34.55 1037 1034 239.2
D 7 238 2233908 9084.53 1053 1015 245.8
D 13 187 968666 3936.89 1053 1015 245.8
D 12 110 354222 1437.02 1053 1015 245.8

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