ASTROSAT CZTI

Data Quality Report

Orbit 20171110_G08_032T01_9000001680_level2

Creation date: 2018-01-08T21:51:24.166272
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_032T01_9000001680cztM0_level2_bc.evt modeM0/AS1G08_032T01_9000001680cztM0_level2_quad_clean.evt
Size (bytes)1,555,652,160461,381,760
Size1.4 GB 440.0 MB
Events in quadrant A8,078,5212,914,361
Events in quadrant B15,480,2052,797,456
Events in quadrant C7,729,7802,875,648
Events in quadrant D13,183,5192,727,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0510
B0510
C0510
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0811510
B01116480
C0799210
D0985840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07880
B07880
C07880
D07880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A387124531.170180%
B3871228817.442137%
C387122780.718124%
D3871215383.972928%

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 43863 38717 4 4 0.01% 0.01%
B 43863 38713 160 160 0.36% 0.41%
C 43863 38716 3 3 0.01% 0.01%
D 43863 38710 165 165 0.38% 0.43%

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 9 143 106198 240.24 1977 1944 434.0
A 14 235 68355 153.04 1977 1944 434.0
A 13 248 55481 123.37 1977 1944 434.0
B 4 239 3637438 9972.83 1904 1852 364.5
B 3 64 2340754 6415.88 1904 1852 364.5
B 15 204 1099695 3011.51 1904 1852 364.5
C 3 9 79927 178.68 1938 1908 436.6
C 12 4 24198 51.05 1938 1908 436.6
C 5 239 20961 43.64 1938 1908 436.6
D 1 52 2844659 6244.39 1933 1868 455.3
D 13 104 612890 1342.15 1933 1868 455.3
D 10 253 490660 1073.67 1933 1868 455.3

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