ASTROSAT CZTI

Data Quality Report

Orbit 48544

Creation date: 2024-09-19T22:54:22.050555
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/AS1A13_037T01_9000006436_48544cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48544cztM0_level2_quad_clean.evt
Size (bytes)456,468,480104,325,120
Size435.3 MB 99.5 MB
Events in quadrant A6,868,955671,357
Events in quadrant B2,949,120718,824
Events in quadrant C2,738,810691,378
Events in quadrant D3,819,150609,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02472048
B0139636
C0135898
D0165025

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0111
D0122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67052814.190902%
B6710450.670641%
C670990.134148%
D67112293.412308%

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 7687 6713 134 134 1.74% 2.00%
B 7687 6713 10 10 0.13% 0.15%
C 7687 6713 0 0 0.00% 0.00%
D 7687 6713 190 190 2.47% 2.83%

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 10 83 4120567 28827.87 690 677 142.9
A 7 3 34593 237.32 690 677 142.9
A 13 248 19407 131.06 690 677 142.9
B 5 171 64018 458.92 700 679 138.0
B 5 255 54276 388.34 700 679 138.0
B 0 183 20081 140.58 700 679 138.0
C 12 250 13969 80.8 698 701 164.2
C 13 61 4700 24.35 698 701 164.2
C 12 249 3073 14.45 698 701 164.2
D 2 165 875946 5058.75 683 660 173.0
D 2 249 176748 1017.71 683 660 173.0
D 7 96 58616 334.96 683 660 173.0

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