ASTROSAT CZTI

Data Quality Report

Orbit 20160112_G02_026T02_9000000266_level2

Creation date: 2017-10-26T21:42:47.468043
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/AS1G02_026T02_9000000266cztM0_level2.evt modeM0/AS1G02_026T02_9000000266cztM0_level2_quad_clean.evt
Size (bytes)6,927,860,160508,466,880
Size6.5 GB 484.9 MB
Events in quadrant A51,558,4613,140,694
Events in quadrant B53,221,1043,207,679
Events in quadrant C50,174,3353,095,773
Events in quadrant D52,018,8832,997,212

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08740
B08740
C08740
D08740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01838400
B01886350
C01797860
D01853970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A431181560.361798%
B431181470.340925%
C431181390.322371%
D431186351.472703%

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 46603 43124 1604 1604 3.44% 3.72%
B 46603 43124 1749 1749 3.75% 4.06%
C 46603 43122 1470 1470 3.15% 3.41%
D 46603 43125 3115 3115 6.68% 7.22%

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 8 14 139761 39.25 13422 13554 3215.5
A 8 15 70488 17.71 13422 13554 3215.5
A 12 251 49838 11.28 13422 13554 3215.5
B 4 80 123645 33.61 13951 14074 3260.5
B 0 220 107159 28.55 13951 14074 3260.5
B 0 234 90378 23.4 13951 14074 3260.5
C 8 229 434452 119.71 12657 13112 3519.6
C 9 68 270258 73.06 12657 13112 3519.6
C 1 192 62850 14.13 12657 13112 3519.6
D 13 138 1780289 490.86 12614 12846 3600.7
D 10 84 1632169 449.73 12614 12846 3600.7
D 13 53 804927 219.98 12614 12846 3600.7

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