ASTROSAT CZTI

Data Quality Report

Orbit 20160913_G05_152T02_9000000658_level2

Creation date: 2016-10-20T23:30:28.807790
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_152T02_9000000658cztM0_level2_bc.evt modeM0/AS1G05_152T02_9000000658cztM0_level2_quad_clean.evt
Size (bytes)576,057,600229,478,400
Size549.4 MB 218.8 MB
Events in quadrant A4,047,7921,394,097
Events in quadrant B4,016,3401,398,914
Events in quadrant C3,820,8251,394,967
Events in quadrant D4,162,3051,358,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04540
B04480
C04590
D04260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B12513186377920
C12513186377920
D12513186377920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0422810
B0418980
C0414280
D0428330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202833271.612188%
B202872951.454133%
C202542091.031895%
D202543181.570060%

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 28090 21154 14 14 0.05% 0.07%
B 28090 21137 0 0 0.00% 0.00%
C 28088 21110 0 0 0.00% 0.00%
D 28090 21123 74 74 0.26% 0.35%

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 341447 1600.43 936 912 212.8
A 0 50 55027 254.33 936 912 212.8
A 13 14 39139 179.66 936 912 212.8
B 15 204 232232 1241.99 951 921 186.2
B 4 48 70817 375.3 951 921 186.2
B 0 229 26869 139.32 951 921 186.2
C 1 16 99991 475.07 929 913 208.6
C 8 128 23337 107.52 929 913 208.6
C 5 250 21490 98.67 929 913 208.6
D 2 63 210284 939.65 931 892 222.8
D 2 136 203442 908.95 931 892 222.8
D 2 33 108912 484.74 931 892 222.8

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