ASTROSAT CZTI

Data Quality Report

Orbit 20161205_A02_191T01_9000000854_level2

Creation date: 2017-09-19T09:38:52.232238
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/AS1A02_191T01_9000000854cztM0_level2.evt modeM0/AS1A02_191T01_9000000854cztM0_level2_quad_clean.evt
Size (bytes)8,125,344,0001,640,393,280
Size7.6 GB 1.5 GB
Events in quadrant A55,304,37610,482,721
Events in quadrant B58,272,60110,775,655
Events in quadrant C53,523,13510,355,710
Events in quadrant D70,793,7119,764,879

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02487530
B02550940
C02473530
D02954430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024640
B024640
C024640
D024640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02080
B02080
C02080
D02080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12128012431.024901%
B12128014361.184037%
C1212807210.594492%
D12128034922.879288%

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 141770 121303 3 3 0.00% 0.00%
B 141770 121303 125 125 0.09% 0.10%
C 141770 121303 1 1 0.00% 0.00%
D 141770 121303 2045 2045 1.44% 1.69%

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 8 15 233665 77.54 14146 13839 2834.9
A 15 234 203642 66.95 14146 13839 2834.9
A 15 239 144500 46.09 14146 13839 2834.9
B 0 228 1178606 432.58 14263 13929 2692.4
B 15 204 457586 164.78 14263 13929 2692.4
B 11 51 380680 136.22 14263 13929 2692.4
C 1 16 154275 45.08 13633 13663 3119.0
C 13 61 108008 30.25 13633 13663 3119.0
C 10 170 61137 15.22 13633 13663 3119.0
D 2 63 12518683 3776.57 13551 13116 3311.4
D 2 152 2632545 791.04 13551 13116 3311.4
D 2 136 834326 248.0 13551 13116 3311.4

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