To convert fitted (or unfitted) XPS spectra to ASCII data for use in Excel, SigmaPlot or other graphing programs:
1. In CasaXPS, open your file and click on the spectrum of interest in the blocks area (right side of screen). You can also do multiple spectra at once if desired. This is useful if you are comparing various spectra.
2. Click on the button "Save Tab ASCII"
3. Save the file with an appropriate name.
The ASCII data contains the data in both Kinetic Energy (first set of data) and Binding Energy sets (second set of data) and includes data points for CPS, peak fits, background line and the resulting fitted envelope.