Supernovae generate a lot of neutrinos, which can be detected in NaI detectors via coherent elastic neutrino-nucleus scattering (CEvNS).
Using a two simplified SN simulation simulations (an 11 solar mass one and a 27 solar mass one) we can compute the CEvNS rates to estimate how close a galactic supernova would have to be to detect it. I estimate that it would probably have to be around 2 kpc or closer for a threshold of 1 keVee and 50 kg detector. (Event rate scales as 1/distance^2)
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