ASTROSAT CZTI

Data Quality Report

Orbit 20190405_A05_046T01_9000002834_level2

Creation date: 2019-05-13T20:59:08.550514
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_046T01_9000002834cztM0_level2_bc.evt modeM0/AS1A05_046T01_9000002834cztM0_level2_quad_clean.evt
Size (bytes)12,345,600,9604,046,302,080
Size11.5 GB 3.8 GB
Events in quadrant A63,139,79325,943,859
Events in quadrant B78,045,21326,538,511
Events in quadrant C70,375,03125,668,261
Events in quadrant D141,618,65423,567,780

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061980
B061980
C061980
D061980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06319200
B06869410
C06618140
D09571630

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05050
B05050
C05050
D05050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A30431435871.178717%
B30431471202.339689%
C30431366402.181964%
D3043143452611.345518%

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 371256 304326 47 47 0.01% 0.02%
B 371256 304320 435 435 0.12% 0.14%
C 371256 304323 501 501 0.13% 0.16%
D 371256 304285 2777 2777 0.75% 0.91%

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 9 143 594486 165.94 16114 15804 3487.2
A 13 254 353776 96.92 16114 15804 3487.2
A 14 235 132021 33.33 16114 15804 3487.2
B 3 112 6526722 2139.72 16320 15888 3042.8
B 7 220 2598837 848.86 16320 15888 3042.8
B 6 36 1296596 420.89 16320 15888 3042.8
C 3 233 5640091 1517.23 15767 15691 3707.0
C 9 54 2656249 712.32 15767 15691 3707.0
C 9 15 748760 197.75 15767 15691 3707.0
D 7 238 57616204 16474.6 15215 14684 3496.4
D 1 20 11425316 3263.55 15215 14684 3496.4
D 1 52 7531051 2149.75 15215 14684 3496.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter