ASTROSAT CZTI

Data Quality Report

Orbit 20170208_A02_031T01_9000001014_level2

Creation date: 2017-09-23T02:24:52.938706
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_031T01_9000001014cztM0_level2.evt modeM0/AS1A02_031T01_9000001014cztM0_level2_quad_clean.evt
Size (bytes)704,188,800147,098,880
Size671.6 MB 140.3 MB
Events in quadrant A4,813,996929,092
Events in quadrant B5,262,936952,989
Events in quadrant C4,779,460947,236
Events in quadrant D5,757,441897,957

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217910
B0229040
C0216730
D0246310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10523560.532168%
B10507870.828019%
C10514310.294845%
D105131101.046324%

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 21361 10538 1 1 0.00% 0.01%
B 21361 10528 7 7 0.03% 0.07%
C 21361 10532 0 0 0.00% 0.00%
D 21361 10533 64 64 0.30% 0.61%

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 4 2 62029 240.9 1228 1200 252.5
A 0 226 11871 42.26 1228 1200 252.5
A 15 234 11703 41.59 1228 1200 252.5
B 10 252 272825 1147.2 1249 1220 236.8
B 0 214 77305 321.37 1249 1220 236.8
B 4 170 31698 128.73 1249 1220 236.8
C 1 16 20997 70.11 1211 1220 282.1
C 8 229 16722 54.95 1211 1220 282.1
C 12 4 9887 30.72 1211 1220 282.1
D 2 216 650095 2193.29 1196 1160 295.9
D 12 233 192562 646.91 1196 1160 295.9
D 1 52 143899 482.43 1196 1160 295.9

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