ASTROSAT CZTI

Data Quality Report

Orbit 20170305_A02_132T01_9000001068_level2

Creation date: 2017-09-23T08:13:11.487863
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_132T01_9000001068cztM0_level2.evt modeM0/AS1A02_132T01_9000001068cztM0_level2_quad_clean.evt
Size (bytes)7,981,246,0801,474,344,000
Size7.4 GB 1.4 GB
Events in quadrant A54,912,1069,186,753
Events in quadrant B58,499,4559,347,132
Events in quadrant C54,512,9829,313,557
Events in quadrant D65,832,9668,730,788

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02432610
B02509520
C02426660
D02766860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024040
B024060
C024060
D024060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11787920021.698352%
B11788323341.979929%
C11788013681.160502%
D11787733932.878424%

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 132738 117903 16 16 0.01% 0.01%
B 132737 117902 172 172 0.13% 0.15%
C 132738 117907 3 3 0.00% 0.00%
D 132737 117902 1589 1589 1.20% 1.35%

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 0 226 134066 41.7 14180 13868 2882.5
A 12 194 125909 38.87 14180 13868 2882.5
A 0 128 92472 27.27 14180 13868 2882.5
B 4 173 869414 314.63 14299 13956 2719.0
B 4 239 723717 261.04 14299 13956 2719.0
B 4 81 351473 124.13 14299 13956 2719.0
C 12 4 117659 32.05 13913 13999 3234.2
C 13 61 107102 28.79 13913 13999 3234.2
C 8 128 53925 12.34 13913 13999 3234.2
D 1 52 6470520 1919.44 13794 13385 3364.1
D 2 152 2392814 707.31 13794 13385 3364.1
D 12 221 1649554 486.36 13794 13385 3364.1

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