ASTROSAT CZTI

Data Quality Report

Orbit 20160521_G05_192T01_9000000466_level2

Creation date: 2017-10-26T19:46:16.808679
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_192T01_9000000466cztM0_level2.evt modeM0/AS1G05_192T01_9000000466cztM0_level2_quad_clean.evt
Size (bytes)3,098,180,160592,862,400
Size2.9 GB 565.4 MB
Events in quadrant A23,410,3533,731,439
Events in quadrant B24,287,7943,765,803
Events in quadrant C22,790,0403,747,924
Events in quadrant D20,312,6213,633,183

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01003880
B01027540
C0992920
D0942840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09100
B09100
C09100
D09100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A448638291.847848%
B448636521.453313%
C448637181.600428%
D448634761.061008%

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 53736 44867 273 273 0.51% 0.61%
B 53736 44867 60 60 0.11% 0.13%
C 53736 44866 303 303 0.56% 0.68%
D 53736 44867 114 114 0.21% 0.25%

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 0 50 1626521 1533.19 5261 5168 1057.5
A 8 15 827228 777.36 5261 5168 1057.5
A 14 238 443537 414.53 5261 5168 1057.5
B 15 204 2328127 2271.13 5353 5236 1022.8
B 4 81 599163 580.69 5353 5236 1022.8
B 4 200 195107 185.64 5353 5236 1022.8
C 7 220 992851 834.53 5152 5182 1183.5
C 1 192 897773 754.2 5152 5182 1183.5
C 15 208 279588 231.86 5152 5182 1183.5
D 13 223 384129 307.78 5132 4994 1231.8
D 13 239 169367 133.44 5132 4994 1231.8
D 5 233 125397 97.74 5132 4994 1231.8

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