Dynamic Spectrum and Imaging
Get Dynamic Sepctrum with SunCASA
Within SunCASA, you are using IPython to interact with the system. This does not mean extensive python experience is necessary. Basic Python interactions are straightforward, e.g., assigning parameters, importing modules, running functions. The first module we introduce is dspec. This module allows you to generate a dynamic spectrum from an MS file, and visualize it. You can select a subset of data by specifying a time range, spectral windows/channels, antenna baseline. Check out the links for detail selection syntax.
from suncasa.utils import dspec as ds msfile = 'IDB20170821201020-203020.12s.slfcaled.ms' # the visbility data bl = '' ## spw = '' specfile = msfile + '.dspec.npz' timeran = '' domedian =True ds.get_dspec(vis=msfile, specfile=specfile, bl=bl, spw=spw, domedian=domedian) ds.plt_dspec(specfile, pol='XXYY')