ASTROSAT CZTI

Data Quality Report

Orbit 20171011_G08_046T09_9000001600_level2

Creation date: 2017-10-18T20:15:26.219377
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_046T09_9000001600cztM0_level2.evt modeM0/AS1G08_046T09_9000001600cztM0_level2_quad_clean.evt
Size (bytes)6,479,426,880920,903,040
Size6.0 GB 878.2 MB
Events in quadrant A61,829,9075,520,060
Events in quadrant B48,558,9405,919,046
Events in quadrant C32,250,2975,972,230
Events in quadrant D48,837,8585,630,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014400
B014420
C014400
D014360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02314980
B01916970
C01458840
D01926580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70599863112.225386%
B7069046336.553968%
C707804520.638598%
D7072427773.926531%

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 81542 70818 6684 6684 8.20% 9.44%
B 81542 70875 2599 2599 3.19% 3.67%
C 81542 70934 66 66 0.08% 0.09%
D 81542 70926 1999 1999 2.45% 2.82%

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 14 238 16681124 10386.47 8015 7847 1605.3
A 8 5 10480005 6523.54 8015 7847 1605.3
A 15 174 3495208 2172.42 8015 7847 1605.3
B 4 239 14628398 9399.85 8301 8104 1555.4
B 10 244 573831 363.72 8301 8104 1555.4
B 4 81 334822 210.06 8301 8104 1555.4
C 14 234 114173 55.98 8220 8256 1891.9
C 9 54 65522 30.27 8220 8256 1891.9
C 13 61 60132 27.42 8220 8256 1891.9
D 1 52 4855397 2500.09 8135 7914 1938.9
D 11 129 3983847 2050.59 8135 7914 1938.9
D 10 253 2625396 1349.97 8135 7914 1938.9

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