ASTROSAT CZTI

Data Quality Report

Orbit 20160104_G02_058T01_9000000242_level2

Creation date: 2016-09-06T17:55:44.971385
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_058T01_9000000242cztM0_level2_bc.evt modeM0/AS1G02_058T01_9000000242cztM0_level2_quad_clean.evt
Size (bytes)759,317,760234,550,080
Size724.1 MB 223.7 MB
Events in quadrant A3,523,4601,486,061
Events in quadrant B4,947,6751,489,733
Events in quadrant C4,954,2361,472,339
Events in quadrant D8,250,0991,326,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0782730
B0876820
C0824920
D0992720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19282430.223006%
B19281850.440849%
C19281700.363052%
D19284271214.063472%

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 25233 19289 11 11 0.04% 0.06%
B 25233 19288 5 5 0.02% 0.03%
C 25233 19291 1 1 0.00% 0.01%
D 25233 19291 124 124 0.49% 0.64%

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 32 128985 701.15 863 843 182.8
A 13 235 26655 141.24 863 843 182.8
A 15 127 20182 105.82 863 843 182.8
B 8 4 1058673 6762.14 880 854 156.4
B 6 53 149336 949.18 880 854 156.4
B 0 234 90164 570.92 880 854 156.4
C 15 241 1367295 7494.41 861 846 182.3
C 3 79 63059 341.21 861 846 182.3
C 12 4 46507 250.43 861 846 182.3
D 5 190 3873626 22770.27 784 763 170.1
D 9 53 1125712 6614.07 784 763 170.1
D 2 33 63986 371.72 784 763 170.1

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
Veto Counter