ASTROSAT CZTI

Data Quality Report

Orbit 20160106_T01_023T01_9000000250_level2

Creation date: 2017-10-26T21:59:21.941258
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/AS1T01_023T01_9000000250cztM0_level2.evt modeM0/AS1T01_023T01_9000000250cztM0_level2_quad_clean.evt
Size (bytes)11,797,971,840805,170,240
Size11.0 GB 767.9 MB
Events in quadrant A89,533,3114,896,790
Events in quadrant B92,111,0324,989,799
Events in quadrant C84,512,4954,917,257
Events in quadrant D86,479,9544,714,983

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014480
B014480
C014480
D014480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01030
C01030
D01030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03161710
B03239490
C03015040
D03076190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A709844160.586048%
B709845300.746647%
C709842880.405725%
D7098419082.687930%

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 81534 70992 3753 3753 4.60% 5.29%
B 81534 70991 4152 4152 5.09% 5.85%
C 81534 70991 2394 2394 2.94% 3.37%
D 81534 70991 4817 4817 5.91% 6.79%

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 15 127 5395559 1029.17 21810 21987 5221.3
A 4 32 172092 28.75 21810 21987 5221.3
A 13 235 123605 19.46 21810 21987 5221.3
B 8 4 2912249 539.76 22754 22879 5353.1
B 6 53 808576 146.77 22754 22879 5353.1
B 12 52 695805 125.71 22754 22879 5353.1
C 15 241 2696506 463.73 20761 21510 5768.5
C 3 111 225160 35.3 20761 21510 5768.5
C 3 79 165866 25.02 20761 21510 5768.5
D 9 53 9354912 1505.39 19997 20799 6200.5
D 9 66 1277923 202.75 19997 20799 6200.5
D 2 88 350891 53.24 19997 20799 6200.5

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