ASTROSAT CZTI

Data Quality Report

Orbit 26652

Creation date: 2024-06-27T19:31:24.872740
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/AS1A09_145T01_9000003848_26652cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26652cztM0_level2_quad_clean.evt
Size (bytes)543,643,20085,371,840
Size518.5 MB 81.4 MB
Events in quadrant A3,785,303536,832
Events in quadrant B4,597,890541,523
Events in quadrant C3,628,312524,359
Events in quadrant D3,998,325515,625

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153450
B0177830
C0147330
D0163720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66971271.896372%
B66975357.988652%
C66971742.598178%
D66971231.836643%

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 7132 6698 55 55 0.77% 0.82%
B 7132 6698 298 298 4.18% 4.45%
C 7132 6698 41 41 0.57% 0.61%
D 7132 6698 48 48 0.67% 0.72%

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 12 96 259227 1479.06 855 841 174.7
A 0 13 227298 1296.29 855 841 174.7
A 13 254 11144 58.98 855 841 174.7
B 10 245 1251873 7970.91 817 799 157.0
B 0 189 68612 432.05 817 799 157.0
B 3 112 38462 239.96 817 799 157.0
C 2 16 228580 1183.47 814 818 192.5
C 14 238 131902 681.12 814 818 192.5
C 3 233 54134 277.03 814 818 192.5
D 1 52 204574 914.92 821 806 222.7
D 7 80 171051 764.4 821 806 222.7
D 2 250 122987 548.59 821 806 222.7

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