ASTROSAT CZTI

Data Quality Report

Orbit 20180717_G08_035T01_9000002234_level2

Creation date: 2018-07-18T10:29:37.103094
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_035T01_9000002234cztM0_level2_bc.evt modeM0/AS1G08_035T01_9000002234cztM0_level2_quad_clean.evt
Size (bytes)663,232,320224,066,880
Size632.5 MB 213.7 MB
Events in quadrant A5,333,4201,402,281
Events in quadrant B4,378,0821,414,832
Events in quadrant C4,527,5631,403,535
Events in quadrant D4,631,9131,342,760

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0432950
B0396620
C0394590
D0393360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177292211.246545%
B177293762.120819%
C177291510.851712%
D177293311.866998%

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 21071 17728 0 0 0.00% 0.00%
B 21071 17726 18 18 0.09% 0.10%
C 21071 17729 0 0 0.00% 0.00%
D 21071 17728 75 75 0.36% 0.42%

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 15 239 1663546 8332.39 897 877 199.5
A 12 189 177858 886.93 897 877 199.5
A 13 248 20556 98.62 897 877 199.5
B 3 64 414039 2385.67 902 879 173.2
B 0 229 182280 1047.45 902 879 173.2
B 3 209 63363 360.8 902 879 173.2
C 3 233 1057436 5384.75 879 866 196.2
C 14 234 17539 84.97 879 866 196.2
C 0 207 6005 26.19 879 866 196.2
D 2 33 489625 2324.73 882 850 210.3
D 2 16 292233 1385.89 882 850 210.3
D 7 38 103172 486.67 882 850 210.3

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