ASTROSAT CZTI

Data Quality Report

Orbit 20180527_G08_066T04_9000002122_level2

Creation date: 2018-05-29T09:41:23.889414
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_066T04_9000002122cztM0_level2_bc.evt modeM0/AS1G08_066T04_9000002122cztM0_level2_quad_clean.evt
Size (bytes)1,528,292,160568,402,560
Size1.4 GB 542.1 MB
Events in quadrant A9,709,7743,690,412
Events in quadrant B9,246,0193,737,998
Events in quadrant C12,143,1913,577,340
Events in quadrant D12,479,8743,487,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08100
B08100
C08100
D08100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0857850
B0861130
C0952860
D0957000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A396803580.902218%
B396805671.428931%
C396802840.715726%
D3968014083.548387%

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 47121 39677 4 4 0.01% 0.01%
B 47121 39676 4 4 0.01% 0.01%
C 47121 39677 2 2 0.00% 0.01%
D 47121 39677 462 462 0.98% 1.16%

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 8 15 1369621 2992.51 2078 2032 457.0
A 12 189 178004 385.06 2078 2032 457.0
A 15 69 44822 93.63 2078 2032 457.0
B 0 229 341887 850.02 2093 2037 399.8
B 0 189 266306 660.98 2093 2037 399.8
B 4 142 167645 414.21 2093 2037 399.8
C 3 233 4170659 9283.25 2025 2000 449.1
C 14 234 36159 76.07 2025 2000 449.1
C 3 232 13905 26.51 2025 2000 449.1
D 15 0 1402256 2946.02 2006 1949 475.3
D 2 120 711005 1491.74 2006 1949 475.3
D 10 199 659029 1382.39 2006 1949 475.3

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