ASTROSAT CZTI

Data Quality Report

Orbit 20190301_A05_212T07_9000002746_level2

Creation date: 2019-03-02T10:50:28.907830
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/AS1A05_212T07_9000002746cztM0_level2_bc.evt modeM0/AS1A05_212T07_9000002746cztM0_level2_quad_clean.evt
Size (bytes)622,512,000254,946,240
Size593.7 MB 243.1 MB
Events in quadrant A4,442,9671,600,734
Events in quadrant B4,140,1741,643,667
Events in quadrant C3,820,2541,593,668
Events in quadrant D5,138,5951,565,908

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416410
B0405530
C0399180
D0441960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191263111.626059%
B191262421.265293%
C191262821.474433%
D191265692.975008%

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 22976 19122 11 11 0.05% 0.06%
B 22976 19123 3 3 0.01% 0.02%
C 22976 19122 0 0 0.00% 0.00%
D 22976 19123 18 18 0.08% 0.09%

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 0 13 468914 2126.01 1009 990 220.1
A 15 174 42571 188.92 1009 990 220.1
A 13 254 27084 118.56 1009 990 220.1
B 6 36 52973 267.55 1029 1004 194.2
B 3 64 29858 148.55 1029 1004 194.2
B 0 230 24484 120.88 1029 1004 194.2
C 3 233 7799 29.28 988 983 232.8
C 5 112 7276 27.03 988 983 232.8
C 9 54 7077 26.18 988 983 232.8
D 1 52 931535 4026.46 993 957 231.1
D 7 238 147695 634.91 993 957 231.1
D 13 168 92987 398.2 993 957 231.1

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