addressing PR comments.

pypeit/images/pypeitimage.py

@@ -91,6 +91,9 @@ class PypeItImage(datamodel.DataContainer):
             :class:`~pypeit.images.rawimage.RawImage.process`.
     """
 
+    # TODO These docs are confusing. The __init__ method needs to be documented just as it is for
+    # every other class that we have written in PypeIt, i.e. the arguments all need to be documented. They are not
+    # documented here and instead we have the odd Args documentation above. 
     version = '1.3.0'
     """Datamodel version number"""
 
@@ -161,6 +164,7 @@ def from_pypeitimage(cls, pypeitImage):
         # Done
         return self
 
+    # TODO This init method needs proper docs, which includes every optional argument. See my comment above. 
     def __init__(self, image, ivar=None, nimg=None, amp_img=None, det_img=None, rn2img=None,
                  base_var=None, img_scale=None, fullmask=None, detector=None, spat_flexure=None,
                  filename=None, PYP_SPEC=None, units=None, exptime=None, noise_floor=None, 

pypeit/images/rawimage.py

@@ -676,9 +676,9 @@ def process(self, par, bpm=None, scattlight=None, flatimages=None, bias=None, sl
                                               exptime=self.exptime,
                                               noise_floor=self.par['noise_floor'],
                                               shot_noise=self.par['shot_noise'],
-                                              bpm=_bpm.astype(bool))
+                                              bpm=_bpm.astype(bool), 
+                                              filename=self.filename)
 
-        pypeitImage.filename = self.filename
         pypeitImage.rawheadlist = self.headarr
         pypeitImage.process_steps = [key for key in self.steps.keys() if self.steps[key]]