ASTROSAT CZTI

Data Quality Report

Orbit 20181208_A05_010T02_9000002556_level2

Creation date: 2018-12-14T14:46:27.448945
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_010T02_9000002556cztM0_level2_bc.evt modeM0/AS1A05_010T02_9000002556cztM0_level2_quad_clean.evt
Size (bytes)6,504,048,0002,391,819,840
Size6.1 GB 2.2 GB
Events in quadrant A38,437,70615,475,836
Events in quadrant B37,055,73315,559,118
Events in quadrant C35,342,91314,664,148
Events in quadrant D73,618,47914,153,408

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037360
B037360
C037360
D037360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02710
B02710
C02710
D02710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03841830
B03803640
C03790750
D05005650

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18388718300.995176%
B18388721101.147444%
C18388724901.354092%
D183887104905.704590%

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 210719 183891 50 50 0.02% 0.03%
B 210719 183887 1 1 0.00% 0.00%
C 210719 183893 17 17 0.01% 0.01%
D 210719 183885 4014 4014 1.90% 2.18%

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 0 23 1079242 521.6 9458 9277 2051.3
A 4 2 658575 316.53 9458 9277 2051.3
A 13 210 260330 122.39 9458 9277 2051.3
B 0 230 226944 121.8 9524 9282 1787.1
B 0 229 157566 82.98 9524 9282 1787.1
B 0 214 109535 56.1 9524 9282 1787.1
C 3 233 423265 198.52 8986 8920 2087.1
C 7 220 109952 48.41 8986 8920 2087.1
C 14 128 102256 44.72 8986 8920 2087.1
D 11 176 18869048 9066.69 9027 8715 2080.2
D 5 222 9507495 4566.33 9027 8715 2080.2
D 13 232 5157726 2475.27 9027 8715 2080.2

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