ASKAP Continuum Data Validation Report

Observations

SBID Project Date Duration
(hours)		 Field Centre Central Frequency
(MHz)
78421 AS209 2025-10-25T02:42:29.8 2.00 10:56:39.52892399 +12:34:24.98597635 855.49

Image

File: 'image.i.FLASH_667.SB78421.cont.taylor.0.restored.conv.fits'

ASKAPsoft
version		 Pipeline
version		 Number of
bad beams		 Synthesised Beam
(arcsec)		 Median r.m.s.
(uJy)		 Image peak
(Jy)		 Dynamic Range Sky Area
(deg2)
1.20.0 2.20.236
 23.1 x 13.2 123 3.92 4E+02 55.49

Catalogue

File: 'selavy-image.i.FLASH_667.SB78421.cont.taylor.0.restored.conv.components.xml'

Source Finder Flux Type Number of
sources (≥5.0σ)		 Multi-component
islands		 Sum of image flux vs.
sum of catalogue flux		 Median in-band spectral index Median int/peak flux Source Counts
χred2
selavy integrated 10470 780 99.8 Jy vs. 103.0 Jy -0.59 ± 0.30
1.13 ± 0.19
12.56

Cross-matches

Survey Frequency
(MHz)		 Cross-matches Median offset
(arcsec)		 Median flux ratio Median spectral index
RACS-low 887.5 1492 2.74 ± 1.02 (RA)
-2.71 ± 0.94 (Dec)
 0.87 ± 0.16 (extrapolated)

ASKAP continuum validation metrics

Flux Ratio
(ASKAP / RACS-low-extrapolated)		 Positional Offset (arcsec)
(ASKAP — RACS-low)		 Resolved Fraction from int/peak Flux
(ASKAP)		 r.m.s. (uJy)
(ASKAP)		 Median in-band
spectral index		 Number of bad
beams (ASKAP)
0.87 3.85 0.20 123 -0.5936

Generated at 2025-10-26 19:57:51