Filters the spectra prior to analysis for the requested MS level. For example, if the data contain MS and MS/MS spectra, setting ms_level = 1 will analyze only the MS scan events. Setting ms_level = 2 will analyze only the MS/MS scan events. Setting ms_level = 0 will analyze all spectra.
[Number]
0 to 10
1.10 to Current Release
ms_level = 1