ASTROSAT CZTI

Data Quality Report

Orbit 20171128_G08_006T01_9000001728_level2

Creation date: 2018-01-09T06:53:28.855350
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/AS1G08_006T01_9000001728cztM0_level2_bc.evt modeM0/AS1G08_006T01_9000001728cztM0_level2_quad_clean.evt
Size (bytes)1,864,843,200636,511,680
Size1.7 GB 607.0 MB
Events in quadrant A17,633,5894,167,440
Events in quadrant B12,202,2874,305,167
Events in quadrant C7,374,0384,352,463
Events in quadrant D16,892,6404,057,802

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07100
B07100
C07100
D07100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01149470
B0910490
C0719200
D01005810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3488129398.425791%
B3488119225.510163%
C348814741.358906%
D3488119585.613371%

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 41206 34882 29 29 0.07% 0.08%
B 41206 34882 33 33 0.08% 0.09%
C 41206 34883 1 1 0.00% 0.00%
D 41206 34880 725 725 1.76% 2.08%

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 15 9581864 24233.47 1838 1809 395.3
A 1 162 420138 1058.19 1838 1809 395.3
A 9 143 320975 807.35 1838 1809 395.3
B 4 239 2164851 6201.8 1883 1843 348.8
B 3 64 1059128 3031.46 1883 1843 348.8
B 15 204 762895 2182.1 1883 1843 348.8
C 4 222 39674 92.2 1867 1849 410.2
C 12 4 19636 43.36 1867 1849 410.2
C 13 61 11333 23.12 1867 1849 410.2
D 1 52 5583130 13229.51 1844 1790 421.9
D 8 195 2147932 5087.02 1844 1790 421.9
D 4 95 651075 1539.01 1844 1790 421.9

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