ASTROSAT CZTI

Data Quality Report

Orbit 20160718_G05_167T01_9000000542_level2

Creation date: 2016-09-06T17:48:23.461877
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/AS1G05_167T01_9000000542cztM0_level2_bc.evt modeM0/AS1G05_167T01_9000000542cztM0_level2_quad_clean.evt
Size (bytes)762,194,880265,227,840
Size726.9 MB 252.9 MB
Events in quadrant A4,860,7921,673,414
Events in quadrant B4,536,5481,660,328
Events in quadrant C7,064,0861,611,575
Events in quadrant D5,125,3421,582,482

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0467840
B0458300
C0536430
D0479560

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04480
B04480
C04480
D04480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A218612971.358584%
B218612871.312840%
C218597353.362459%
D218583681.683594%

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 22727 21867 5 5 0.02% 0.02%
B 22727 21865 1 1 0.00% 0.00%
C 22727 21865 72 72 0.32% 0.33%
D 22727 21865 18 18 0.08% 0.08%

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 13 251 349875 1382.25 1097 1073 252.3
A 15 234 128566 505.24 1097 1073 252.3
A 0 50 72314 282.32 1097 1073 252.3
B 15 204 101205 452.12 1104 1076 221.5
B 14 167 78956 351.66 1104 1076 221.5
B 4 48 48595 214.57 1104 1076 221.5
C 9 247 2374141 9785.79 1062 1050 242.5
C 9 16 411832 1693.92 1062 1050 242.5
C 10 65 56158 227.25 1062 1050 242.5
D 13 239 203558 780.42 1077 1035 259.5
D 2 63 183015 701.26 1077 1035 259.5
D 4 95 173911 666.18 1077 1035 259.5

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