From 68e84a82dae5ed625791618d5ac6af3aca8f2a68 Mon Sep 17 00:00:00 2001
From: Artur Glavic <artur.glavic@psi.ch>
Date: Thu, 15 Oct 2026 15:12:23 +0200
Subject: [PATCH] Filter normalization with 0 counts also in no footprint mode

---
 eos/projection.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/eos/projection.py b/eos/projection.py
index 8b93464..84f98f6 100644
--- a/eos/projection.py
+++ b/eos/projection.py
@@ -237,7 +237,7 @@ class LZProjection(ProjectionInterface):
 
     def normalize_no_footprint(self, norm: LZNormalisation):
         norm_lz = norm.norm
-        ref_lz = (self.data.I/norm_lz)
+        ref_lz = (self.data.I/np.where(norm_lz>0, norm_lz, np.nan))
         ref_lz *= norm.monitor/self.monitor
         ref_lz[np.logical_not(self.data.mask)] = np.nan
         self.data.norm = norm_lz