ASTROSAT CZTI

Data Quality Report

Orbit 20170724_G07_031T01_9000001402_level2

Creation date: 2017-09-24T12:06:43.300297
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/AS1G07_031T01_9000001402cztM0_level2.evt modeM0/AS1G07_031T01_9000001402cztM0_level2_quad_clean.evt
Size (bytes)541,336,32096,318,720
Size516.3 MB 91.9 MB
Events in quadrant A3,618,473598,080
Events in quadrant B3,947,703611,422
Events in quadrant C3,851,553600,740
Events in quadrant D4,461,266578,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157640
B0167140
C0164430
D0183770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01580
C01580
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7602260.342015%
B7586730.962299%
C7600520.684211%
D75842042.689873%

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 10141 7809 2 2 0.02% 0.03%
B 10141 7805 16 16 0.16% 0.20%
C 10141 7812 24 24 0.24% 0.31%
D 10141 7804 126 126 1.24% 1.61%

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 15 174 30122 155.9 926 906 187.4
A 13 251 11819 58.23 926 906 187.4
A 0 226 8466 40.34 926 906 187.4
B 4 81 201479 1141.56 930 908 175.7
B 0 214 61555 345.18 930 908 175.7
B 4 239 27125 149.22 930 908 175.7
C 4 254 289595 1368.64 908 914 210.9
C 0 207 15329 68.34 908 914 210.9
C 13 61 6894 28.35 908 914 210.9
D 10 253 262245 1164.76 889 867 224.4
D 8 195 203064 901.04 889 867 224.4
D 1 52 194228 861.66 889 867 224.4

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