ASTROSAT CZTI

Data Quality Report

Orbit 20190520_A05_101T05_9000002938_level2

Creation date: 2019-05-21T09:27:50.002053
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_101T05_9000002938cztM0_level2_bc.evt modeM0/AS1A05_101T05_9000002938cztM0_level2_quad_clean.evt
Size (bytes)561,951,360310,412,160
Size535.9 MB 296.0 MB
Events in quadrant A3,267,6222,109,736
Events in quadrant B3,538,0852,117,032
Events in quadrant C3,779,5012,045,954
Events in quadrant D5,298,0781,988,190

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337620
B0345100
C0354180
D0418040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165543201.933068%
B165543211.939108%
C165545013.026459%
D165549485.726713%

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 17438 16551 0 0 0.00% 0.00%
B 17438 16552 4 4 0.02% 0.02%
C 17439 16554 4 4 0.02% 0.02%
D 17439 16555 51 51 0.29% 0.31%

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 11 29 17441 89.39 842 826 185.9
A 13 254 8984 43.89 842 826 185.9
A 5 16 7580 36.34 842 826 185.9
B 4 216 78800 482.32 842 820 161.7
B 0 197 58310 355.58 842 820 161.7
B 0 198 40102 242.96 842 820 161.7
C 3 233 512528 2626.29 812 805 194.8
C 8 208 91232 464.09 812 805 194.8
C 9 221 39316 197.65 812 805 194.8
D 7 238 1468125 7532.69 822 793 194.8
D 1 52 302979 1551.3 822 793 194.8
D 12 218 153780 785.37 822 793 194.8

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