$ pip install xarray-katdal zarr
import xarray_katdal
import xarray
cbid = 1234567890
token = "eYabcdefgh"
url = f"https://archive-gw-1.kat.ac.za/{cb_id}/{cb_id}_sdp_l0.full.rdb?token={token}"
dt = xarray.open_datatree(url)
dt.to_zarr("/path/to/dataset.zarr", compute=True)
dt2 = xarray.open_datatree("/path/to/dataset.zarr")
assert dt.identical(dt2)