ngc0628

[ashleythomasbarnes]

The QA report checklist for this galaxy
Please complete as you progress through the QA
All data for galaxies can be obtained here

Checklist

• tp - check baseline of single-dish image
• tp - check for artefacts in single-dish image

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• 7m - check residual map
• 7m - check baseline of 7m image (i.e. in continuum subtraction okay?)
• 7m - check for negative bowls in 7m image
• 7m - check for artefacts in 7m image (linear features in map, large fluxes etc)

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• 7m+tp - check baseline of 7m image (i.e. in continuum subtraction okay?)
• 7m+tp - check for negative bowls in 7m image
• 7m+tp - check for artefacts in 7m image (linear features in map, large fluxes etc)
• 7m+tp - compare to the single dish image (fluxes okay?)

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• Dataset science ready?

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[lneumann95]

[7m_hcop_image]: first and last channel empty (nan values)
[7m_cs_image]: velocity axis inversed: last channel empty (nan values)

[lneumann95]

[7m_*_image]: beam elongation: BMAJ/BMIN = 1.4

[lneumann95]

[7m_hcop_residual, 7m_cs_residual]: some significant (~3sigma) negative pixels at various channels

[lneumann95]

[lneumann95]

[7m+tp_hcn_pbcorr_trimmed_k]: first and last channels empty (nan values)
[7m+tp_hcop_pbcorr_trimmed_k]: first and last channels empty (nan values)
[7m+tp_cs_pbcorr_trimmed_k]: first and last channels empty (nan values): velocity axis inverted

[lneumann95]

[7m+tp images]: header (really minor): BMIN and BMAJ have different formatting (but numbers agree

)

[lneumann95]

[7m_hcn_singledish_image]: channels 1-35 and 66-101 empty
analog for hcop and cs
[7m_cs_singledish_image]: velocity axis inverted (like with 7m and 7m+tp)

[lneumann95]

[7m_hcop_singledish_image]: negative pixels at the edge of the map in channel 64

[lneumann95]

[7m_cs_singledish_image]: possibly artificial emission and negative values in channel 62

[lneumann95]

QA_v4: trimmed_k maps: check: no more empty channels and units are looking good: CS maps velocity axis still inverted

[lneumann95]

The 7m+tp images seem to have lower resolution and lower SNR for some regions (image below: HCN 7m (left) vs 7m+tp (right

)