ASTROSAT CZTI

Data Quality Report

Orbit 20200212_A08_004T02_9000003496_level2

Creation date: 2020-02-17T13:04:30.084326
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/AS1A08_004T02_9000003496cztM0_level2_bc.evt modeM0/AS1A08_004T02_9000003496cztM0_level2_quad_clean.evt
Size (bytes)1,910,831,040738,204,480
Size1.8 GB 704.0 MB
Events in quadrant A10,412,5984,845,260
Events in quadrant B14,989,4954,876,895
Events in quadrant C10,439,8794,773,543
Events in quadrant D18,661,1754,476,382

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01015160
B01184980
C01026060
D01311270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010020
B010020
C010020
D010020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493855341.081300%
B4938419563.960797%
C493808621.745646%
D4938026645.394897%

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 58005 49388 3 3 0.01% 0.01%
B 58005 49382 115 115 0.20% 0.23%
C 58005 49386 1 1 0.00% 0.00%
D 58005 49384 409 409 0.71% 0.83%

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 13 254 81988 136.0 2679 2633 583.5
A 12 96 65954 108.52 2679 2633 583.5
A 0 226 16894 24.44 2679 2633 583.5
B 3 64 3258021 6467.9 2694 2636 503.3
B 0 189 496947 982.11 2694 2636 503.3
B 0 230 278292 547.68 2694 2636 503.3
C 7 247 296472 475.76 2612 2608 617.7
C 10 9 46216 70.6 2612 2608 617.7
C 10 23 21818 31.1 2612 2608 617.7
D 1 52 4203723 6973.94 2585 2497 602.4
D 12 233 1767901 2930.53 2585 2497 602.4
D 9 85 1039105 1720.75 2585 2497 602.4

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