ASTROSAT CZTI

Data Quality Report

Orbit 20170113_G06_026T01_9000000962_level2

Creation date: 2017-09-22T20:41:36.990980
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_026T01_9000000962cztM0_level2.evt modeM0/AS1G06_026T01_9000000962cztM0_level2_quad_clean.evt
Size (bytes)4,885,908,480975,291,840
Size4.6 GB 930.1 MB
Events in quadrant A34,311,3796,159,801
Events in quadrant B36,362,2946,230,367
Events in quadrant C33,859,0246,115,085
Events in quadrant D38,345,7995,866,686

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542690
B01586400
C01539010
D01653350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015320
B015320
C015320
D015320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A754127861.042274%
B754128911.181510%
C754125890.781043%
D7541213261.758341%

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 87012 75427 15 15 0.02% 0.02%
B 87012 75427 17 17 0.02% 0.02%
C 87012 75427 0 0 0.00% 0.00%
D 87012 75427 637 637 0.73% 0.84%

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 4 2 105903 54.52 8842 8640 1783.9
A 13 14 95360 48.61 8842 8640 1783.9
A 0 226 84822 42.71 8842 8640 1783.9
B 0 214 890246 530.56 8900 8687 1661.6
B 4 173 182580 104.66 8900 8687 1661.6
B 4 81 175844 100.6 8900 8687 1661.6
C 13 61 67656 29.84 8638 8667 1976.5
C 12 4 64241 28.12 8638 8667 1976.5
C 1 16 41075 16.4 8638 8667 1976.5
D 8 195 1712533 817.02 8611 8348 2085.8
D 2 216 1391215 662.98 8611 8348 2085.8
D 12 233 584925 276.42 8611 8348 2085.8

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