ASTROSAT CZTI

Data Quality Report

Orbit 20190211_A05_019T01_9000002718_level2

Creation date: 2019-02-14T15:53:27.651396
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_019T01_9000002718cztM0_level2_bc.evt modeM0/AS1A05_019T01_9000002718cztM0_level2_quad_clean.evt
Size (bytes)5,573,589,1202,135,390,400
Size5.2 GB 2.0 GB
Events in quadrant A36,994,09613,823,322
Events in quadrant B35,337,47913,985,570
Events in quadrant C32,075,69013,149,424
Events in quadrant D53,567,10012,835,302

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02590
B02590
C02590
D02590

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03445050
B03380660
C03309230
D03976710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032380
B032380
C032380
D032380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15892526391.660532%
B15892523351.469246%
C15892523141.456033%
D15892551373.232342%

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 184840 158933 46 46 0.02% 0.03%
B 184840 158928 10 10 0.01% 0.01%
C 184840 158931 9 9 0.00% 0.01%
D 184840 158930 767 767 0.41% 0.48%

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 15 174 3142955 1702.72 8566 8423 1840.9
A 4 2 544048 290.96 8566 8423 1840.9
A 8 255 251275 131.92 8566 8423 1840.9
B 7 220 956872 581.43 8636 8413 1631.3
B 0 189 215244 126.79 8636 8413 1631.3
B 4 216 207966 122.33 8636 8413 1631.3
C 0 207 414779 214.77 8129 8087 1893.6
C 3 233 298019 153.11 8129 8087 1893.6
C 4 223 67336 31.29 8129 8087 1893.6
D 1 52 10365820 5399.65 8313 8019 1918.2
D 7 238 8423316 4387.0 8313 8019 1918.2
D 13 168 864697 446.6 8313 8019 1918.2

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