ASTROSAT CZTI

Data Quality Report

Orbit 20180422_G08_030T01_9000002044_level2

Creation date: 2018-04-23T21:46:18.864208
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/AS1G08_030T01_9000002044cztM0_level2_bc.evt modeM0/AS1G08_030T01_9000002044cztM0_level2_quad_clean.evt
Size (bytes)702,437,760251,919,360
Size669.9 MB 240.2 MB
Events in quadrant A4,024,0891,595,230
Events in quadrant B4,441,5561,554,584
Events in quadrant C4,113,7571,619,913
Events in quadrant D7,399,2931,557,620

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394180
B0408790
C0392300
D0524080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189052191.158424%
B189052701.428194%
C189051760.930971%
D1890510545.575245%

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 22681 18903 0 0 0.00% 0.00%
B 22681 18902 4 4 0.02% 0.02%
C 22681 18903 0 0 0.00% 0.00%
D 22681 18902 48 48 0.21% 0.25%

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 37188 160.57 1021 1002 225.4
A 0 23 30423 130.55 1021 1002 225.4
A 1 162 23765 101.01 1021 1002 225.4
B 3 209 104222 529.4 1011 985 195.0
B 10 245 103828 527.38 1011 985 195.0
B 10 244 90315 458.09 1011 985 195.0
C 3 233 137905 581.41 1014 997 235.5
C 12 4 8178 30.5 1014 997 235.5
C 14 234 6541 23.54 1014 997 235.5
D 13 122 1529584 6173.41 994 961 247.6
D 5 222 690137 2783.27 994 961 247.6
D 1 52 532770 2147.73 994 961 247.6

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