ASTROSAT CZTI

Data Quality Report

Orbit 20190109_T03_070T08_9000002646_level2

Creation date: 2019-01-10T11:29:02.392244
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/AS1T03_070T08_9000002646cztM0_level2_bc.evt modeM0/AS1T03_070T08_9000002646cztM0_level2_quad_clean.evt
Size (bytes)668,076,480242,464,320
Size637.1 MB 231.2 MB
Events in quadrant A4,222,1761,531,434
Events in quadrant B4,522,4641,575,174
Events in quadrant C4,991,4651,479,070
Events in quadrant D5,200,4881,453,904

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0399840
B0409950
C0433770
D0432010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189222291.210231%
B189222341.236656%
C189225462.885530%
D189223321.754571%

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 24007 18922 36 36 0.15% 0.19%
B 24007 18922 18 18 0.07% 0.10%
C 24007 18921 8 8 0.03% 0.04%
D 24007 18921 37 37 0.15% 0.20%

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 15 174 213827 957.88 1038 1021 222.2
A 4 2 13391 55.68 1038 1021 222.2
A 15 191 7678 29.96 1038 1021 222.2
B 4 142 136858 689.53 1061 1038 197.0
B 0 219 79198 396.8 1061 1038 197.0
B 10 245 77577 388.57 1061 1038 197.0
C 4 254 731076 3062.2 1007 1004 238.4
C 3 233 184999 771.74 1007 1004 238.4
C 5 218 111532 463.6 1007 1004 238.4
D 7 238 839151 3360.72 1012 985 249.4
D 5 222 195923 781.62 1012 985 249.4
D 1 52 85569 339.15 1012 985 249.4

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