ASTROSAT CZTI

Data Quality Report

Orbit 20200812_A09_143T05_9000003804_level2

Creation date: 2021-01-09T07:17:02.613858
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/AS1A09_143T05_9000003804cztM0_level2_bc.evt modeM0/AS1A09_143T05_9000003804cztM0_level2_quad_clean.evt
Size (bytes)845,184,960257,016,960
Size806.0 MB 245.1 MB
Events in quadrant A3,761,2871,699,849
Events in quadrant B4,382,0171,703,850
Events in quadrant C8,833,4391,537,905
Events in quadrant D7,378,4771,591,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0373060
B0396410
C0586220
D0498710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181411390.766220%
B181412811.548977%
C18141192810.627860%
D181419845.424177%

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 20401 18141 1 1 0.00% 0.01%
B 20401 18141 23 23 0.11% 0.13%
C 20401 18141 75 75 0.37% 0.41%
D 20401 18140 164 164 0.80% 0.90%

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 0 13 80423 386.51 933 914 205.7
A 6 16 73729 353.97 933 914 205.7
A 13 254 30461 143.63 933 914 205.7
B 5 172 480901 2636.28 936 911 182.1
B 0 230 194986 1065.93 936 911 182.1
B 0 219 53451 288.57 936 911 182.1
C 3 233 4522961 21627.78 864 858 209.1
C 0 239 898948 4295.28 864 858 209.1
C 14 225 32640 152.0 864 858 209.1
D 1 52 3162142 14949.05 898 870 211.5
D 12 233 445300 2101.62 898 870 211.5
D 11 176 155695 732.14 898 870 211.5

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