From b7d96e4ef1fc6fc4842ab7dc79d7dc9ea6317f06 Mon Sep 17 00:00:00 2001 From: Ian Sullivan <sullii@uw.edu> Date: Mon, 4 Nov 2024 20:42:27 -0800 Subject: [PATCH] Return None for the PSF if the computed shape is NAN --- python/lsst/pipe/tasks/finalizeCharacterization.py | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/python/lsst/pipe/tasks/finalizeCharacterization.py b/python/lsst/pipe/tasks/finalizeCharacterization.py index 1900ca300..16213bad4 100644 --- a/python/lsst/pipe/tasks/finalizeCharacterization.py +++ b/python/lsst/pipe/tasks/finalizeCharacterization.py @@ -690,6 +690,13 @@ def compute_psf_and_ap_corr_map(self, visit, detector, exposure, src, isolated_s self.log.warning('Failed to determine psf for visit %d, detector %d: %s', visit, detector, e) return None, None, measured_src + # Verify that the PSF is usable by downstream tasks + sigma = psf.computeShape(psf.getAveragePosition()).getDeterminantRadius() + if np.isnan(sigma): + self.log.warning('Failed to determine psf for visit %d, detector %d: ' + 'Computed final PSF size is NAN.', + visit, detector) + return None, None, measured_src # Set the psf in the exposure for measurement/aperture corrections. exposure.setPsf(psf)