ASTROSAT CZTI

Data Quality Report

Orbit 20190115_A05_101T06_9000002656_level2

Creation date: 2019-01-17T11:00:20.425909
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_101T06_9000002656cztM0_level2_bc.evt modeM0/AS1A05_101T06_9000002656cztM0_level2_quad_clean.evt
Size (bytes)567,446,400224,640,000
Size541.2 MB 214.2 MB
Events in quadrant A3,579,5981,431,805
Events in quadrant B4,537,2501,452,674
Events in quadrant C3,393,2381,382,967
Events in quadrant D4,492,7481,347,319

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03540
C03540
D03540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0358780
B0394370
C0354980
D0384620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172421340.777172%
B172423371.954530%
C172421861.078761%
D172422321.345552%

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 21538 17245 0 0 0.00% 0.00%
B 21538 17243 3 3 0.01% 0.02%
C 21538 17243 0 0 0.00% 0.00%
D 21538 17243 49 49 0.23% 0.28%

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 15 174 73527 360.27 909 892 201.6
A 14 238 6127 25.97 909 892 201.6
A 0 226 6038 25.52 909 892 201.6
B 15 222 499460 2867.9 920 898 173.8
B 0 189 86348 491.54 920 898 173.8
B 15 35 67202 381.4 920 898 173.8
C 3 233 23235 109.16 869 863 204.9
C 5 218 11540 52.09 869 863 204.9
C 8 208 8722 38.34 869 863 204.9
D 7 238 734561 3228.62 874 848 227.3
D 10 70 122454 535.11 874 848 227.3
D 2 234 81392 354.42 874 848 227.3

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