ASTROSAT CZTI

Data Quality Report

Orbit 20180219_G08_033T01_9000001906_level2

Creation date: 2018-07-07T19:33:38.794166
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_033T01_9000001906cztM0_level2_bc.evt modeM0/AS1G08_033T01_9000001906cztM0_level2_quad_clean.evt
Size (bytes)689,713,920258,062,400
Size657.8 MB 246.1 MB
Events in quadrant A4,674,8481,683,639
Events in quadrant B5,942,9501,627,142
Events in quadrant C3,406,3211,695,853
Events in quadrant D5,651,5651,589,846

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0415230
B0483690
C0357620
D0431380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177082461.389203%
B1770816629.385588%
C17708420.237181%
D177085222.947820%

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 20365 17710 1 1 0.00% 0.01%
B 20365 17700 116 116 0.57% 0.66%
C 20365 17710 0 0 0.00% 0.00%
D 20365 17710 106 106 0.52% 0.60%

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 12 189 539903 2752.46 871 852 195.8
A 15 223 360016 1833.93 871 852 195.8
A 1 162 199580 1014.73 871 852 195.8
B 4 239 1443450 8906.29 833 809 162.0
B 3 64 963632 5944.08 833 809 162.0
B 0 85 121633 745.92 833 809 162.0
C 14 234 21100 104.27 863 850 194.2
C 8 222 5450 23.69 863 850 194.2
C 13 61 5082 21.79 863 850 194.2
D 1 52 1228623 6059.8 858 826 202.6
D 8 195 615956 3035.98 858 826 202.6
D 13 122 175632 862.76 858 826 202.6

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