ASTROSAT CZTI

Data Quality Report

Orbit 20170917_A03_097T01_9000001540_level2

Creation date: 2018-05-18T06:48:04.456178
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/AS1A03_097T01_9000001540cztM0_level2.evt modeM0/AS1A03_097T01_9000001540cztM0_level2_quad_clean.evt
Size (bytes)16,702,473,6002,447,006,400
Size15.6 GB 2.3 GB
Events in quadrant A120,244,52015,141,774
Events in quadrant B131,760,40615,635,442
Events in quadrant C91,603,54815,778,050
Events in quadrant D149,271,83714,359,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039200
B039200
C039200
D039180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03170
B03170
C03170
D03170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04884370
B05187980
C04067570
D05726280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192635138717.200664%
B192640118166.133721%
C19264723991.245283%
D192645120956.278388%

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 223797 192664 11201 11201 5.00% 5.81%
B 223797 192680 6377 6377 2.85% 3.31%
C 223797 192687 656 656 0.29% 0.34%
D 223797 192675 9445 9445 4.22% 4.90%

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 15 239 32416279 7404.2 21886 21438 4375.2
A 15 174 807674 179.7 21886 21438 4375.2
A 4 2 795414 176.9 21886 21438 4375.2
B 4 239 31591117 7506.13 22532 22006 4205.8
B 0 85 5224575 1237.01 22532 22006 4205.8
B 4 81 2512650 592.2 22532 22006 4205.8
C 4 254 3876938 752.25 22268 22401 5124.0
C 14 234 373101 68.44 22268 22401 5124.0
C 4 175 299094 54.0 22268 22401 5124.0
D 10 199 15140289 2921.02 21626 21048 5176.0
D 2 16 12310137 2374.24 21626 21048 5176.0
D 8 195 11075342 2135.68 21626 21048 5176.0

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