ASTROSAT CZTI

Data Quality Report

Orbit 20190516_A05_101T08_9000002922_level2

Creation date: 2019-05-17T16:14:32.662479
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_101T08_9000002922cztM0_level2_bc.evt modeM0/AS1A05_101T08_9000002922cztM0_level2_quad_clean.evt
Size (bytes)1,411,171,200457,073,280
Size1.3 GB 435.9 MB
Events in quadrant A7,146,5732,956,149
Events in quadrant B8,734,1682,998,865
Events in quadrant C7,062,9732,909,625
Events in quadrant D17,552,7342,722,030

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680660
B0739090
C0686880
D01089480

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06700
B06700
C06700
D06700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A328532090.636167%
B328535401.643686%
C328533441.047089%
D3285330119.165069%

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 40269 32852 2 2 0.00% 0.01%
B 40269 32853 51 51 0.13% 0.16%
C 40269 32855 0 0 0.00% 0.00%
D 40269 32855 313 313 0.78% 0.95%

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 5 16 104111 265.06 1824 1796 386.0
A 13 254 30458 74.25 1824 1796 386.0
A 0 226 11959 26.33 1824 1796 386.0
B 3 112 1266874 3726.5 1837 1798 339.5
B 7 220 169110 492.85 1837 1798 339.5
B 4 216 67451 193.39 1837 1798 339.5
C 3 233 112908 264.55 1796 1790 420.0
C 8 208 15206 31.94 1796 1790 420.0
C 9 221 14695 30.72 1796 1790 420.0
D 7 238 5363595 13263.6 1764 1710 404.3
D 1 52 2796445 6913.28 1764 1710 404.3
D 12 218 2176653 5380.12 1764 1710 404.3

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