ASTROSAT CZTI

Data Quality Report

Orbit 20151017_P01_126T02_9000000034_level2

Creation date: 2016-09-06T18:00:34.419452
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/AS1P01_126T02_9000000034cztM0_level2_bc.evt modeM0/AS1P01_126T02_9000000034cztM0_level2_quad_clean.evt
Size (bytes)1,741,366,080390,447,360
Size1.6 GB 372.4 MB
Events in quadrant A20,801,0592,176,711
Events in quadrant B8,962,2952,237,512
Events in quadrant C9,015,2572,185,094
Events in quadrant D10,911,9502,155,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02255410
B01882360
C01780930
D01757570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09140
B09140
C09140
D09140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01710
B01710
C01710
D01710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A447325941.327908%
B44732800.178843%
C44732460.102835%
D447323340.746669%

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 61787 44731 280 280 0.45% 0.63%
B 61787 44732 28 28 0.05% 0.06%
C 61787 44732 4 4 0.01% 0.01%
D 61787 44723 100 100 0.16% 0.22%

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 15 127 12162042 30268.97 1897 1857 401.7
A 12 149 706108 1753.01 1897 1857 401.7
A 0 6 123844 303.65 1897 1857 401.7
B 0 183 331250 941.61 1958 1896 349.8
B 5 46 170142 481.01 1958 1896 349.8
B 0 151 146406 413.15 1958 1896 349.8
C 1 1 534239 1364.47 1866 1828 390.2
C 5 234 333143 849.1 1866 1828 390.2
C 3 159 265023 674.52 1866 1828 390.2
D 2 253 695931 1703.83 1860 1804 407.4
D 13 216 653027 1598.52 1860 1804 407.4
D 10 154 286722 699.37 1860 1804 407.4

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