ASTROSAT CZTI

Data Quality Report

Orbit 51442

Creation date: 2025-04-03T13:20:42.848975
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_090T01_9000006458_51442cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51442cztM0_level2_quad_clean.evt
Size (bytes)957,576,96090,414,720
Size913.2 MB 86.2 MB
Events in quadrant A8,454,071656,406
Events in quadrant B4,628,299750,765
Events in quadrant C17,465,617149,780
Events in quadrant D4,296,941640,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306523
B0192740
C0571900
D0185680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A776391911.838207%
B77633134.031946%
C7763643582.893211%
D77641632.099433%

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 7763 7763 839 839 10.81% 10.81%
B 7763 7763 275 275 3.54% 3.54%
C 7762 7762 6067 6067 78.16% 78.16%
D 7764 7764 158 158 2.04% 2.04%

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 3 2066925 10629.32 780 761 194.4
A 7 64 1218131 6262.73 780 761 194.4
A 12 250 826503 4248.01 780 761 194.4
B 0 172 553786 3225.85 799 771 171.4
B 12 32 205211 1192.54 799 771 171.4
B 4 81 93007 538.03 799 771 171.4
C 15 179 9015551 77963.57 422 419 115.6
C 4 12 6020150 52059.11 422 419 115.6
C 10 171 319934 2763.19 422 419 115.6
D 3 12 524575 2381.98 783 754 219.9
D 7 96 140997 637.73 783 754 219.9
D 10 172 72423 325.9 783 754 219.9

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