ASTROSAT CZTI

Data Quality Report

Orbit 20170605_G07_028T01_9000001272_level2

Creation date: 2017-09-24T02:55:19.650896
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/AS1G07_028T01_9000001272cztM0_level2.evt modeM0/AS1G07_028T01_9000001272cztM0_level2_quad_clean.evt
Size (bytes)1,231,758,720217,221,120
Size1.1 GB 207.2 MB
Events in quadrant A10,404,9341,380,017
Events in quadrant B7,475,5541,404,107
Events in quadrant C8,475,9241,367,718
Events in quadrant D9,867,3501,323,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420000
B0330730
C0361950
D0408990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159883322.076557%
B15998990.618827%
C159891200.750516%
D159924582.863932%

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 19041 16010 133 133 0.70% 0.83%
B 19041 16011 1 1 0.01% 0.01%
C 19041 16011 112 112 0.59% 0.70%
D 19041 16011 330 330 1.73% 2.06%

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 5 2825974 7482.7 1867 1832 377.4
A 1 162 170316 446.41 1867 1832 377.4
A 4 2 86912 225.42 1867 1832 377.4
B 0 214 119695 328.74 1888 1842 358.5
B 12 111 40944 109.07 1888 1842 358.5
B 11 111 32855 86.51 1888 1842 358.5
C 9 68 1230044 2904.63 1825 1837 422.8
C 14 234 127025 296.06 1825 1837 422.8
C 13 61 13755 28.19 1825 1837 422.8
D 1 52 2720113 6134.62 1803 1757 443.1
D 2 14 214256 479.55 1803 1757 443.1
D 2 234 60347 132.22 1803 1757 443.1

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter