ASTROSAT CZTI

Data Quality Report

Orbit 47354

Creation date: 2024-06-30T22:26:56.055864
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_093T17_9000006322_47354cztM0_level2.fits modeM0/AS1A13_093T17_9000006322_47354cztM0_level2_quad_clean.evt
Size (bytes)569,882,880102,628,800
Size543.5 MB 97.9 MB
Events in quadrant A7,233,621691,417
Events in quadrant B6,734,036585,815
Events in quadrant C2,992,616707,171
Events in quadrant D3,607,328649,095

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262851
B0246023
C0138851
D0155281

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67984716.928508%
B6797164224.157717%
C6797590.868030%
D67981822.677258%

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 7648 6798 216 216 2.82% 3.18%
B 7647 6797 1204 1204 15.74% 17.71%
C 7647 6797 3 3 0.04% 0.04%
D 7648 6798 106 106 1.39% 1.56%

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 3757249 23458.61 764 749 160.1
A 15 235 403228 2513.4 764 749 160.1
A 9 191 83634 517.6 764 749 160.1
B 0 186 3441118 26132.58 659 641 131.7
B 12 3 351893 2667.98 659 641 131.7
B 0 190 123837 935.75 659 641 131.7
C 3 233 17549 93.02 757 761 180.5
C 12 249 9918 50.74 757 761 180.5
C 12 2 7365 36.59 757 761 180.5
D 12 2 382506 1979.39 759 736 192.9
D 2 249 62736 321.46 759 736 192.9
D 10 181 42979 219.02 759 736 192.9

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