ASTROSAT CZTI

Data Quality Report

Orbit 20170901_A03_126T01_9000001512_level2

Creation date: 2018-05-18T05:05:16.008981
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/AS1A03_126T01_9000001512cztM0_level2.evt modeM0/AS1A03_126T01_9000001512cztM0_level2_quad_clean.evt
Size (bytes)11,481,373,4401,917,849,600
Size10.7 GB 1.8 GB
Events in quadrant A137,453,13613,813,628
Events in quadrant B103,706,35515,527,589
Events in quadrant C86,046,28717,568,580
Events in quadrant D10,869,3471,368,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05224700
B04285060
C03840320
D0440300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03270
C03270
D03270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035660
B037280
C034140
D037050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A174546151278.666483%
B18410853372.898842%
C18765112200.650143%
D177361470.828823%

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 271295 186258 12339 12339 4.55% 6.62%
B 271295 195047 2292 2292 0.84% 1.18%
C 271295 197940 58 58 0.02% 0.03%
D 33462 18236 104 104 0.31% 0.57%

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 13 251 54156895 13473.11 20020 19585 4018.2
A 3 80 2752366 680.1 20020 19585 4018.2
A 15 174 852703 207.34 20020 19585 4018.2
B 4 239 14610365 3578.93 21757 21224 4076.4
B 0 214 1403930 339.2 21757 21224 4076.4
B 11 51 1061786 255.26 21757 21224 4076.4
C 14 234 600275 114.64 21894 22026 5043.9
C 13 61 162109 27.77 21894 22026 5043.9
C 14 67 103293 16.11 21894 22026 5043.9
D 8 195 1213846 2466.09 2071 2017 491.4
D 1 20 864967 1756.12 2071 2017 491.4
D 13 104 292257 590.64 2071 2017 491.4

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