ASTROSAT CZTI

Data Quality Report

Orbit 20151024_P01_161T02_9000000066_level2

Creation date: 2016-09-06T17:59:58.793858
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/AS1P01_161T02_9000000066cztM0_level2_bc.evt modeM0/AS1P01_161T02_9000000066cztM0_level2_quad_clean.evt
Size (bytes)815,143,680242,406,720
Size777.4 MB 231.2 MB
Events in quadrant A5,720,6581,409,970
Events in quadrant B4,676,7471,418,532
Events in quadrant C6,322,3141,405,115
Events in quadrant D6,237,3571,367,801

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01084510
B01035890
C01038220
D0984460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05180
B05180
C05180
D05180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230
B01230
C01230
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25294660.260931%
B25294170.067210%
C252941500.593026%
D252941450.573258%

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 40818 25294 8 8 0.02% 0.03%
B 40818 25294 3 3 0.01% 0.01%
C 40818 25294 36 36 0.09% 0.14%
D 40818 25294 21 21 0.05% 0.08%

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 0 238 668825 3038.03 1029 1006 219.8
A 0 69 239142 1083.32 1029 1006 219.8
A 12 243 185348 838.61 1029 1006 219.8
B 0 220 110849 567.7 1054 1020 193.5
B 5 46 62754 319.1 1054 1020 193.5
B 4 82 50892 257.79 1054 1020 193.5
C 1 1 1066502 4749.99 1030 1010 224.3
C 3 159 415956 1849.84 1030 1010 224.3
C 2 53 367095 1632.02 1030 1010 224.3
D 13 7 343812 1500.66 1020 991 228.4
D 13 221 259825 1133.02 1020 991 228.4
D 1 4 137533 597.7 1020 991 228.4

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
Veto Counter