ASTROSAT CZTI

Data Quality Report

Orbit 20180122_G06_067T01_9000001860_level2

Creation date: 2018-07-24T13:16:46.115173
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/AS1G06_067T01_9000001860cztM0_level2_bc.evt modeM0/AS1G06_067T01_9000001860cztM0_level2_quad_clean.evt
Size (bytes)549,408,960228,623,040
Size524.0 MB 218.0 MB
Events in quadrant A3,729,4991,464,115
Events in quadrant B3,856,8241,515,176
Events in quadrant C3,434,0021,480,732
Events in quadrant D4,533,1261,372,512

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0343760
B0346090
C0330830
D0369930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158371000.631433%
B158371831.155522%
C158371040.656690%
D158372481.565953%

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 19792 15838 0 0 0.00% 0.00%
B 19792 15837 0 0 0.00% 0.00%
C 19792 15837 6 6 0.03% 0.04%
D 19792 15837 22 22 0.11% 0.14%

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 1 162 151524 801.99 862 847 187.9
A 0 23 125674 664.4 862 847 187.9
A 8 15 70453 370.48 862 847 187.9
B 4 239 143867 874.48 886 866 163.5
B 11 51 104844 635.85 886 866 163.5
B 0 205 82720 500.55 886 866 163.5
C 15 208 46042 239.04 860 850 189.1
C 3 233 18432 93.0 860 850 189.1
C 9 221 6778 31.36 860 850 189.1
D 1 52 746291 3876.67 840 813 192.3
D 8 195 213369 1105.34 840 813 192.3
D 13 104 154447 798.94 840 813 192.3

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