% Load data from ASCII .phx file
%   >> det = get_phx(filename)
%
% data has following fields:
%   det.filename    Name of file excluding path
%   det.filepath    Path to file including terminating file separator
%   det.group       Row vector of detector group number - assumed to be 1:ndet
%   det.phi         Row vector of scattering angles (deg)
%   det.azim        Row vector of azimuthal angles (deg)
%                  (West bank=0 deg, North bank=90 deg etc.)
%   det.dphi        Row vector of angular widths (deg)
%   det.danght      Row vector of angular heights (deg)
%