ASTROSAT CZTI

Data Quality Report

Orbit 31908

Creation date: 2024-06-27T20:34:05.764578
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/AS1A10_123T09_9000004654_31908cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31908cztM0_level2_quad_clean.evt
Size (bytes)995,166,720102,047,040
Size949.1 MB 97.3 MB
Events in quadrant A3,657,073726,904
Events in quadrant B6,998,286682,356
Events in quadrant C5,542,008659,041
Events in quadrant D13,435,424496,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158002
B0264122
C0215172
D0451443

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7512650.865282%
B75126007.987220%
C75126478.612886%
D7511382550.925310%

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 7807 7514 34 34 0.44% 0.45%
B 7807 7514 291 291 3.73% 3.87%
C 7807 7514 200 200 2.56% 2.66%
D 7806 7513 3846 3846 49.27% 51.19%

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 15 174 120127 651.23 913 890 183.1
A 13 254 15679 80.77 913 890 183.1
A 13 6 9393 46.44 913 890 183.1
B 6 159 2238645 13388.65 882 860 167.1
B 5 172 584398 3491.3 882 860 167.1
B 4 80 285199 1701.2 882 860 167.1
C 0 10 1611436 7999.19 853 856 201.3
C 3 233 370710 1836.94 853 856 201.3
C 14 238 148433 732.96 853 856 201.3
D 12 33 6108449 35402.19 722 704 172.5
D 8 195 2751308 15943.26 722 704 172.5
D 7 38 869166 5033.84 722 704 172.5

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