ASTROSAT CZTI

Data Quality Report

Orbit 20151019_P01_162T09_9000000038_level2

Creation date: 2016-09-06T18:00:23.213083
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_162T09_9000000038cztM0_level2_bc.evt modeM0/AS1P01_162T09_9000000038cztM0_level2_quad_clean.evt
Size (bytes)596,580,480242,363,520
Size568.9 MB 231.1 MB
Events in quadrant A3,704,5651,535,190
Events in quadrant B4,266,6351,542,336
Events in quadrant C4,043,3701,500,454
Events in quadrant D4,755,5091,458,078

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0801140
B0801020
C0752100
D0778390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18938340.179533%
B189381250.660049%
C18938890.469955%
D189382631.388742%

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 30458 18939 5 5 0.02% 0.03%
B 30458 18939 100 100 0.33% 0.53%
C 30458 18939 68 68 0.22% 0.36%
D 30458 18939 11 11 0.04% 0.06%

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 14 235 145207 871.01 801 785 165.8
A 0 69 142577 855.15 801 785 165.8
A 12 149 53181 316.0 801 785 165.8
B 8 6 574111 3889.49 814 790 147.4
B 10 252 144433 974.49 814 790 147.4
B 5 46 68416 458.78 814 790 147.4
C 10 19 293094 1744.87 782 767 167.5
C 1 1 164593 977.86 782 767 167.5
C 2 192 154195 915.79 782 767 167.5
D 1 5 214430 1230.64 778 755 173.6
D 4 114 185613 1064.67 778 755 173.6
D 1 4 182558 1047.07 778 755 173.6

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