ASTROSAT CZTI

Data Quality Report

Orbit 20181031_A05_059T05_9000002478_level2

Creation date: 2018-11-02T09:43:09.949954
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/AS1A05_059T05_9000002478cztM0_level2_bc.evt modeM0/AS1A05_059T05_9000002478cztM0_level2_quad_clean.evt
Size (bytes)686,511,360333,584,640
Size654.7 MB 318.1 MB
Events in quadrant A5,491,2712,217,264
Events in quadrant B4,234,6782,291,696
Events in quadrant C4,596,7922,186,863
Events in quadrant D5,219,5682,151,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451780
B0389460
C0412730
D0421290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182268794.822781%
B182261670.916273%
C182262451.344234%
D182262231.223527%

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 19417 18227 62 62 0.32% 0.34%
B 19417 18228 4 4 0.02% 0.02%
C 19417 18227 16 16 0.08% 0.09%
D 19417 18227 16 16 0.08% 0.09%

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 15 174 1956055 9810.99 891 872 199.3
A 9 143 91560 455.07 891 872 199.3
A 3 1 18070 86.3 891 872 199.3
B 15 35 196045 1105.51 916 894 176.5
B 0 229 123102 692.3 916 894 176.5
B 10 16 63175 352.82 916 894 176.5
C 3 233 899425 4356.06 872 868 206.3
C 0 207 301696 1458.37 872 868 206.3
C 7 247 25637 120.08 872 868 206.3
D 2 16 578043 2688.09 894 862 214.7
D 1 52 471899 2193.75 894 862 214.7
D 11 176 185952 862.01 894 862 214.7

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