I use Anton Paar SAXCess camera to obtain small angle x- ray scattering data for my phosphatidylcholine (+sterol) samples. The profiles are normalized against the beam profile while integrating the 1 D scattering pattern. However, for the same sample-cell material used,  I obtain different intensities for the empty- cell reflections in different measurements. I think, since the material of the cell is identical, the patterns should have same normalized intensity in different measurements . So, it seems that normalizing w.r.t. the primary beam was not adequate to quantitatively interpret the data (possibly due to problems/ inconsistencies with beam profile). Is it appropriate to normalize the profile again in such a way that the aforesaid peak has constant intensity, e.g. I = 1 (e.g. dividing the intensities with this intensity value)?