ASTROSAT CZTI

Data Quality Report

Orbit 20160622_G05_170T01_9000000510_level2

Creation date: 2016-09-06T17:49:02.227841
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/AS1G05_170T01_9000000510cztM0_level2_bc.evt modeM0/AS1G05_170T01_9000000510cztM0_level2_quad_clean.evt
Size (bytes)595,465,920187,346,880
Size567.9 MB 178.7 MB
Events in quadrant A4,147,5591,169,556
Events in quadrant B5,860,4901,159,893
Events in quadrant C3,155,9761,163,374
Events in quadrant D3,822,5831,127,140

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03100
B03100
C03100
D03100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0355150
B0400900
C0320500
D0348040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152757404.844517%
B152698575.612679%
C152721851.211367%
D152714863.182503%

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 17016 15277 64 64 0.38% 0.42%
B 17016 15276 200 200 1.18% 1.31%
C 17016 15277 3 3 0.02% 0.02%
D 17016 15275 24 24 0.14% 0.16%

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 15 236 809737 4989.71 705 689 162.1
A 0 50 337318 2076.12 705 689 162.1
A 0 118 114940 704.63 705 689 162.1
B 14 167 1788375 12796.27 708 687 139.7
B 3 0 759463 5431.32 708 687 139.7
B 15 204 323453 2310.36 708 687 139.7
C 9 144 395370 2496.07 695 681 158.1
C 8 128 13182 79.06 695 681 158.1
C 10 65 9634 56.62 695 681 158.1
D 2 232 766439 4614.99 694 666 165.9
D 2 32 106675 638.87 694 666 165.9
D 12 233 71794 428.66 694 666 165.9

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