ASTROSAT CZTI

Data Quality Report

Orbit 20161202_G06_169T01_9000000846_level2

Creation date: 2017-09-19T08:39:56.684584
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/AS1G06_169T01_9000000846cztM0_level2.evt modeM0/AS1G06_169T01_9000000846cztM0_level2_quad_clean.evt
Size (bytes)785,139,840128,128,320
Size748.8 MB 122.2 MB
Events in quadrant A6,763,855793,638
Events in quadrant B5,584,276794,772
Events in quadrant C4,822,002785,322
Events in quadrant D5,883,766767,061

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275100
B0238820
C0220700
D0249650

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02180
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106598427.899428%
B106753162.960187%
C106911611.505940%
D106773132.931535%

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 11218 10791 294 294 2.62% 2.72%
B 11218 10795 23 23 0.21% 0.21%
C 11218 10800 0 0 0.00% 0.00%
D 11217 10799 110 110 0.98% 1.02%

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 8 15 1992447 8022.37 1221 1195 248.2
A 15 234 17459 65.52 1221 1195 248.2
A 13 251 15625 58.14 1221 1195 248.2
B 0 228 190292 770.24 1266 1234 245.5
B 4 81 132381 534.31 1266 1234 245.5
B 0 219 94928 381.72 1266 1234 245.5
C 9 54 23770 79.25 1225 1226 284.5
C 13 61 9875 30.4 1225 1226 284.5
C 4 254 6429 18.29 1225 1226 284.5
D 2 136 389648 1285.65 1230 1188 302.1
D 2 152 210229 691.85 1230 1188 302.1
D 13 105 193544 636.62 1230 1188 302.1

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