Skymap from narrow posterior samples gives `nan` PROBDENSITY

In some cases, multiorder skymaps from narrow-sky samples contain nans only. In the MWE notebook a set of gaussian samples tightly clustered in 0.01 deg² of the sky is used (and attached here).

gaussian_samples.dat I suspect there is something wrong in my usage of either ligo.skymap.kde.Clustered2DSkyKDE or its .as_healpix() export method.

Edited Oct 21, 2019 by Riccardo Buscicchio

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