ASTROSAT CZTI

Data Quality Report

Orbit 08312

Creation date: 2024-06-27T15:30:51.404535
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_093T01_9000001156_08312cztM0_level2.evt modeM0/AS1A03_093T01_9000001156_08312cztM0_level2_quad_clean.evt
Size (bytes)721,886,40091,684,800
Size688.4 MB 87.4 MB
Events in quadrant A10,662,405450,056
Events in quadrant B3,764,950619,439
Events in quadrant C3,351,892607,089
Events in quadrant D3,585,782587,995

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0366332
B0159431
C0152121
D0157911

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7336295140.226281%
B73361341.826609%
C7336440.599782%
D7336460.627045%

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 7415 7336 2295 2295 30.95% 31.28%
B 7416 7337 6 6 0.08% 0.08%
C 7416 7337 0 0 0.00% 0.00%
D 7416 7337 6 6 0.08% 0.08%

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 15 234 7563522 50007.56 731 713 151.2
A 0 23 211373 1392.95 731 713 151.2
A 14 111 26456 170.22 731 713 151.2
B 0 214 190972 1105.23 891 870 172.0
B 0 219 37457 212.71 891 870 172.0
B 12 111 18341 101.57 891 870 172.0
C 13 61 6543 28.26 857 860 201.1
C 8 128 4805 19.62 857 860 201.1
C 9 54 3318 12.22 857 860 201.1
D 1 7 171275 724.73 855 834 235.2
D 7 67 38257 159.13 855 834 235.2
D 12 221 37735 156.91 855 834 235.2

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