ASTROSAT CZTI

Data Quality Report

Orbit 20095

Creation date: 2024-06-27T18:11:14.349699
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/AS1A05_180T01_9000002992_20095cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20095cztM0_level2_quad_clean.evt
Size (bytes)802,284,480111,925,440
Size765.1 MB 106.7 MB
Events in quadrant A5,984,947714,850
Events in quadrant B7,153,261724,784
Events in quadrant C5,429,830703,341
Events in quadrant D5,187,119689,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228932
B0267132
C0211872
D0206662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A801682810.329341%
B8017137117.101160%
C80176748.407135%
D80174235.276288%

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 8726 8019 431 431 4.94% 5.37%
B 8727 8020 626 626 7.17% 7.81%
C 8727 8020 302 302 3.46% 3.77%
D 8727 8019 253 253 2.90% 3.16%

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 14 238 1858212 9175.14 992 973 202.4
A 14 254 243657 1198.91 992 973 202.4
A 9 143 31028 148.48 992 973 202.4
B 10 245 3210555 17432.91 960 934 184.1
B 7 220 47137 250.95 960 934 184.1
B 0 244 37442 198.29 960 934 184.1
C 4 254 1495541 6594.92 966 976 226.6
C 14 238 151547 664.41 966 976 226.6
C 3 233 14867 61.3 966 976 226.6
D 1 52 1229795 5196.52 982 956 236.5
D 12 218 88137 368.67 982 956 236.5
D 7 96 64128 267.14 982 956 236.5

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