ASTROSAT CZTI

Data Quality Report

Orbit 20160414_G05_238T04_9000000416_level2

Creation date: 2016-09-06T17:51:24.952963
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_238T04_9000000416cztM0_level2_bc.evt modeM0/AS1G05_238T04_9000000416cztM0_level2_quad_clean.evt
Size (bytes)4,615,902,7201,243,002,240
Size4.3 GB 1.2 GB
Events in quadrant A30,554,6917,628,474
Events in quadrant B27,132,4977,611,953
Events in quadrant C30,153,1467,604,052
Events in quadrant D44,405,8647,200,620

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022740
B022740
C022740
D022740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05790
B05790
C05790
D05790

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02553310
B02435150
C02491110
D03125790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11096024962.249459%
B11092912581.134059%
C11094314761.330413%
D11083965025.866166%

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 168853 110960 293 293 0.17% 0.26%
B 168853 110930 254 254 0.15% 0.23%
C 168853 110939 572 572 0.34% 0.52%
D 168853 110834 787 787 0.47% 0.71%

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 13 9 4046474 3676.55 4994 4888 1099.3
A 14 238 2100686 1906.51 4994 4888 1099.3
A 0 31 1106052 1001.71 4994 4888 1099.3
B 2 249 2056880 2105.29 5066 4917 974.7
B 3 27 1039090 1061.05 5066 4917 974.7
B 0 219 729326 743.24 5066 4917 974.7
C 1 192 5798124 5110.4 4986 4891 1133.6
C 6 80 1572798 1383.1 4986 4891 1133.6
C 0 219 1195760 1050.5 4986 4891 1133.6
D 7 80 4257097 3601.55 4870 4714 1180.7
D 12 1 3403336 2878.46 4870 4714 1180.7
D 13 114 2419935 2045.57 4870 4714 1180.7

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