ASTROSAT CZTI

Data Quality Report

Orbit 20180408_G08_070T01_9000002028_level2

Creation date: 2018-04-11T14:08:53.594267
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/AS1G08_070T01_9000002028cztM0_level2_bc.evt modeM0/AS1G08_070T01_9000002028cztM0_level2_quad_clean.evt
Size (bytes)6,745,083,8402,269,356,480
Size6.3 GB 2.1 GB
Events in quadrant A35,991,97614,605,063
Events in quadrant B45,348,61615,531,099
Events in quadrant C40,039,27613,992,641
Events in quadrant D71,378,55513,012,277

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034420
B034420
C034420
D034420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03530770
B03843960
C03575830
D04862590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16929425941.532246%
B16929445102.664005%
C16929418421.088048%
D16929494905.605633%

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 194225 169304 7 7 0.00% 0.00%
B 194225 169303 347 347 0.18% 0.20%
C 194225 169304 1 1 0.00% 0.00%
D 194225 169298 736 736 0.38% 0.43%

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 69 341129 167.12 9168 8966 1987.6
A 1 162 254488 123.53 9168 8966 1987.6
A 9 143 71582 31.5 9168 8966 1987.6
B 0 219 3333612 1786.96 9461 9181 1860.4
B 3 64 1907832 1020.57 9461 9181 1860.4
B 8 250 1639067 876.1 9461 9181 1860.4
C 3 233 5216156 2686.52 8845 8747 1938.3
C 14 234 107069 50.72 8845 8747 1938.3
C 14 220 63664 28.33 8845 8747 1938.3
D 13 122 13638779 6758.27 8666 8365 2016.8
D 5 222 8466211 4193.59 8666 8365 2016.8
D 1 52 5979932 2960.84 8666 8365 2016.8

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