ASTROSAT CZTI

Data Quality Report

Orbit 20160627_G05_241T04_9000000518_level2

Creation date: 2016-09-06T17:48:54.197063
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/AS1G05_241T04_9000000518cztM0_level2_bc.evt modeM0/AS1G05_241T04_9000000518cztM0_level2_quad_clean.evt
Size (bytes)3,756,971,5201,182,314,880
Size3.5 GB 1.1 GB
Events in quadrant A28,518,0647,024,960
Events in quadrant B26,793,2177,116,234
Events in quadrant C22,291,9057,017,367
Events in quadrant D28,308,8076,738,987

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01940
B01940
C01940
D01940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02594460
B02495210
C02372800
D02606520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023420
B023400
C023420
D023420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11546233602.910048%
B11546919541.692229%
C1154609810.849645%
D11547825062.170110%

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 134515 115511 118 118 0.09% 0.10%
B 134515 115512 145 145 0.11% 0.13%
C 134515 115517 27 27 0.02% 0.02%
D 134515 115514 206 206 0.15% 0.18%

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 2833312 2300.13 5536 5408 1229.5
A 0 50 1995855 1618.97 5536 5408 1229.5
A 0 118 702109 566.68 5536 5408 1229.5
B 14 167 2206416 2036.94 5656 5491 1080.5
B 15 204 1129908 1040.64 5656 5491 1080.5
B 4 81 618092 566.96 5656 5491 1080.5
C 9 144 291883 235.36 5498 5401 1217.2
C 12 4 108371 84.59 5498 5401 1217.2
C 1 16 105893 82.56 5498 5401 1217.2
D 10 172 1966697 1523.83 5494 5280 1287.2
D 13 239 1345295 1041.06 5494 5280 1287.2
D 2 232 1308786 1012.69 5494 5280 1287.2

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