ASTROSAT CZTI

Data Quality Report

Orbit 20180810_T02_078T01_9000002294_level2

Creation date: 2018-08-11T09:50:53.554273
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/AS1T02_078T01_9000002294cztM0_level2_bc.evt modeM0/AS1T02_078T01_9000002294cztM0_level2_quad_clean.evt
Size (bytes)599,716,800232,508,160
Size571.9 MB 221.7 MB
Events in quadrant A4,029,8141,508,980
Events in quadrant B3,973,6641,534,409
Events in quadrant C3,853,7181,495,460
Events in quadrant D5,257,1711,448,057

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346490
B0340080
C0339160
D0380310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03120
B03120
C03120
D03120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152953011.967963%
B152951841.203008%
C152952381.556064%
D152954272.791762%

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 18801 15295 7 7 0.04% 0.05%
B 18801 15294 3 3 0.02% 0.02%
C 18801 15295 0 0 0.00% 0.00%
D 18801 15294 94 94 0.50% 0.61%

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 14 238 479530 2548.24 878 865 187.8
A 0 253 87694 462.24 878 865 187.8
A 14 237 58517 306.92 878 865 187.8
B 10 245 179816 1089.16 887 869 164.3
B 4 142 94345 568.94 887 869 164.3
B 0 189 83354 502.04 887 869 164.3
C 3 233 535865 2704.56 853 853 197.8
C 0 207 15127 72.16 853 853 197.8
C 7 247 12268 57.7 853 853 197.8
D 1 52 1133139 5692.26 868 842 198.9
D 5 222 176895 885.05 868 842 198.9
D 7 223 158275 791.44 868 842 198.9

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