ASTROSAT CZTI

Data Quality Report

Orbit 20160519_G05_083T03_9000000462_level2

Creation date: 2016-09-06T17:50:14.621365
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_083T03_9000000462cztM0_level2_bc.evt modeM0/AS1G05_083T03_9000000462cztM0_level2_quad_clean.evt
Size (bytes)661,849,920230,728,320
Size631.2 MB 220.0 MB
Events in quadrant A5,834,7181,400,685
Events in quadrant B4,731,3851,445,638
Events in quadrant C4,333,7161,472,510
Events in quadrant D3,901,8871,419,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0459630
B0407840
C0399990
D0383100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181417704.244529%
B181412761.521416%
C181413972.188413%
D181412311.273359%

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 27724 18141 18 18 0.06% 0.10%
B 27724 18140 5 5 0.02% 0.03%
C 27724 18140 15 15 0.05% 0.08%
D 27724 18142 24 24 0.09% 0.13%

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 0 118 1367167 6839.81 907 887 199.8
A 0 50 515135 2574.41 907 887 199.8
A 15 234 203937 1016.5 907 887 199.8
B 15 204 697612 3898.2 936 909 178.7
B 2 249 218206 1215.82 936 909 178.7
B 4 200 71305 393.88 936 909 178.7
C 7 220 452211 2190.1 932 919 206.1
C 1 192 138461 667.49 932 919 206.1
C 12 4 29478 138.6 932 919 206.1
D 2 107 62418 289.68 931 899 212.4
D 13 46 61664 286.13 931 899 212.4
D 13 223 43342 199.86 931 899 212.4

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