ASTROSAT CZTI

Data Quality Report

Orbit 20170930_A03_118T01_9000001570_level2

Creation date: 2021-08-27T22:22:58.613761
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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_118T01_9000001570cztM0_level2_bc.evt modeM0/AS1A03_118T01_9000001570cztM0_level2_quad_clean.evt
Size (bytes)123,667,20025,444,800
Size117.9 MB 24.3 MB
Events in quadrant A863,831142,237
Events in quadrant B1,169,755128,790
Events in quadrant C522,614145,480
Events in quadrant D976,914140,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0600
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070070
B089070
C059960
D070670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2988612.041499%
B298835511.880857%
C298650.167448%
D2984591.977212%

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 3018 3017 11 11 0.36% 0.36%
B 3018 3016 4 4 0.13% 0.13%
C 3018 3017 0 0 0.00% 0.00%
D 3018 3017 22 22 0.73% 0.73%

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 5 243655 7500.81 135 133 32.5
A 8 15 61664 1895.24 135 133 32.5
A 15 223 15627 477.24 135 133 32.5
B 4 239 642500 22867.25 131 127 28.1
B 0 214 6597 230.32 131 127 28.1
B 0 229 4248 146.7 131 127 28.1
C 14 234 4520 139.09 132 130 31.6
C 8 222 1031 28.55 132 130 31.6
C 13 61 832 22.24 132 130 31.6
D 1 52 197496 5913.32 132 126 33.4
D 8 195 97037 2903.51 132 126 33.4
D 10 199 60785 1817.38 132 126 33.4

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