ASTROSAT CZTI

Data Quality Report

Orbit 20180624_G08_010T02_9000002188_level2

Creation date: 2018-10-06T17:47:56.955346
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_010T02_9000002188cztM0_level2_bc.evt modeM0/AS1G08_010T02_9000002188cztM0_level2_quad_clean.evt
Size (bytes)2,645,720,640927,008,640
Size2.5 GB 884.1 MB
Events in quadrant A16,291,0875,987,269
Events in quadrant B20,045,4165,887,657
Events in quadrant C20,426,8805,742,471
Events in quadrant D18,612,5595,681,049

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01498980
B01666130
C01657480
D01597060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01070
B01070
C01070
D01070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014200
B014200
C014200
D014200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A697137281.044282%
B6971326223.761135%
C6971321833.131410%
D6971317092.451480%

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 85658 69716 3 3 0.00% 0.00%
B 85658 69718 221 221 0.26% 0.32%
C 85658 69714 33 33 0.04% 0.05%
D 85658 69717 145 145 0.17% 0.21%

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 12 189 1658381 2043.17 3743 3673 809.9
A 4 2 126878 152.13 3743 3673 809.9
A 9 143 65855 76.78 3743 3673 809.9
B 3 64 2127522 3105.56 3677 3585 683.9
B 15 222 1378745 2010.72 3677 3585 683.9
B 0 229 463897 673.05 3677 3585 683.9
C 4 254 3332006 4293.45 3541 3490 775.3
C 3 233 3095912 3988.91 3541 3490 775.3
C 0 207 105781 131.95 3541 3490 775.3
D 7 254 2552169 2919.68 3606 3499 872.9
D 13 104 635840 724.39 3606 3499 872.9
D 10 70 546619 622.18 3606 3499 872.9

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