ASTROSAT CZTI

Data Quality Report

Orbit 20180814_T02_083T01_9000002304_level2

Creation date: 2018-08-16T09:50:02.158213
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/AS1T02_083T01_9000002304cztM0_level2_bc.evt modeM0/AS1T02_083T01_9000002304cztM0_level2_quad_clean.evt
Size (bytes)640,523,520257,365,440
Size610.9 MB 245.4 MB
Events in quadrant A4,012,4411,679,476
Events in quadrant B4,373,3501,694,238
Events in quadrant C4,073,1321,648,976
Events in quadrant D5,797,6651,623,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359790
B0373710
C0372010
D0414670

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03420
B03420
C03420
D03420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166582911.746908%
B166583442.065074%
C166584762.857486%
D166589355.612919%

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 21799 16657 3 3 0.01% 0.02%
B 21799 16655 3 3 0.01% 0.02%
C 21799 16655 1 1 0.00% 0.01%
D 21799 16657 433 433 1.99% 2.60%

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 0 253 34700 157.79 1023 1010 213.5
A 7 16 12862 55.51 1023 1010 213.5
A 15 222 10554 44.7 1023 1010 213.5
B 3 64 111941 592.84 1029 1011 187.1
B 0 189 87399 461.68 1029 1011 187.1
B 4 48 53141 278.6 1029 1011 187.1
C 3 233 209291 916.91 989 989 227.2
C 10 22 33843 144.62 989 989 227.2
C 0 207 15356 63.24 989 989 227.2
D 1 52 1693809 6758.05 981 958 250.5
D 13 172 92305 364.67 981 958 250.5
D 12 110 66809 262.88 981 958 250.5

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