Merge branch 'fix_noise_exceptions' into 'main'

E0 might be very wrong during online data processing

See merge request !105

src/est/core/process/noise.py

@@ -79,15 +79,17 @@ def process_noise_savgol(
     else:
         e_max += spectrum.e0
 
-    if e_min > e_max:
-        raise ValueError(f"e min ({e_min}) > e max ({e_max})")
-
     spectrum.larch_dict["noise_e_min"] = e_min
     spectrum.larch_dict["noise_e_max"] = e_max
-
     mask = (spectrum.energy > e_min) & (spectrum.energy < (e_max))
-    spectrum.raw_noise_savgol = numpy.mean(noise[mask])
-    spectrum.norm_noise_savgol = spectrum.raw_noise_savgol / spectrum.edge_step
+
+    if mask.any():
+        spectrum.raw_noise_savgol = numpy.mean(noise[mask])
+        spectrum.norm_noise_savgol = spectrum.raw_noise_savgol / spectrum.edge_step
+    else:
+        # Uses nan's instead of raising an exception. Otherwise we have much more failing workflows online (either E0 is wrong or the scan has not progressed past Emin, which is after the edge so the plots are fine).
+        spectrum.raw_noise_savgol = numpy.nan
+        spectrum.norm_noise_savgol = numpy.nan
 
     if callbacks:
         for callback in callbacks: