ASTROSAT CZTI

Data Quality Report

Orbit 20190519_A05_025T18_9000002932_level2

Creation date: 2019-05-20T12:38:22.502340
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_025T18_9000002932cztM0_level2_bc.evt modeM0/AS1A05_025T18_9000002932cztM0_level2_quad_clean.evt
Size (bytes)590,310,720226,592,640
Size563.0 MB 216.1 MB
Events in quadrant A3,346,3541,453,093
Events in quadrant B4,065,5401,465,573
Events in quadrant C4,317,3441,403,279
Events in quadrant D4,998,7371,384,831

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03380
B03380
C03380
D03380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0349290
B0371850
C0377610
D0398730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A167684312.570372%
B167685653.369513%
C167685593.333731%
D167685853.488788%

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 17483 16767 3 3 0.02% 0.02%
B 17483 16767 14 14 0.08% 0.08%
C 17483 16767 0 0 0.00% 0.00%
D 17483 16768 54 54 0.31% 0.32%

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 67794 364.72 833 814 183.6
A 5 16 58373 313.42 833 814 183.6
A 13 254 14078 72.23 833 814 183.6
B 3 112 537947 3268.45 836 812 164.3
B 7 220 69349 417.05 836 812 164.3
B 0 197 65776 395.3 836 812 164.3
C 8 208 864798 4490.81 809 801 192.4
C 3 233 219598 1137.24 809 801 192.4
C 9 221 82293 423.57 809 801 192.4
D 1 52 1054726 5464.12 824 794 192.9
D 12 218 416123 2153.28 824 794 192.9
D 1 20 172959 892.59 824 794 192.9

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