ASTROSAT CZTI

Data Quality Report

Orbit 20171214_G08_076T03_9000001768_level2

Creation date: 2018-01-05T20:10:00.735833
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_076T03_9000001768cztM0_level2_bc.evt modeM0/AS1G08_076T03_9000001768cztM0_level2_quad_clean.evt
Size (bytes)696,980,160245,416,320
Size664.7 MB 234.0 MB
Events in quadrant A3,936,0881,592,957
Events in quadrant B5,967,2541,554,060
Events in quadrant C3,400,9301,596,293
Events in quadrant D6,635,5611,513,537

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0384720
B0455700
C0349470
D0448990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170603231.893318%
B170608565.017585%
C170601070.627198%
D170606253.663540%

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 20321 17056 37 37 0.18% 0.22%
B 20322 17059 33 33 0.16% 0.19%
C 20321 17059 0 0 0.00% 0.00%
D 20321 17057 172 172 0.85% 1.01%

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 1 162 190175 988.28 880 862 191.6
A 6 254 133046 690.04 880 862 191.6
A 11 29 98408 509.22 880 862 191.6
B 4 239 1634326 9861.62 866 845 165.6
B 15 204 305247 1837.73 866 845 165.6
B 3 64 186366 1120.02 866 845 165.6
C 14 234 9590 45.24 865 853 193.1
C 0 207 8424 39.2 865 853 193.1
C 13 61 5272 22.88 865 853 193.1
D 1 52 1165275 5734.29 870 838 203.1
D 8 195 694668 3416.78 870 838 203.1
D 10 15 545155 2680.5 870 838 203.1

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