    Save the model values to a file.

save_source(id, filename=None, bkg_id=None, ascii=False, clobber=False)
id - int or str, optional
filename - str
bkg_id - int or str, optional
ascii - bool, optional
clobber - bool, optional

The model is evaluated on the grid of the data set, but does not include any instrument response (such as a PSF or ARF and RMF).

Write the model values for the default data set to the file "model.fits":

>>> save_source('model.fits')

Write the model from the data set 'jet' to the ASCII file "model.dat":

>>> save_source('jet', "model.dat", ascii=True)

For 2D (image) data sets, the model is written out as an image:

>>> save_source('img', 'model.img')

PARAMETERS

The parameters for this function are:

Parameter
Definition
id
The identifier for the data set to use. If not given then the default identifier is used, as returned by

`get_default_id` .
filename
The name of the file to write the array to. The format is determined by the `ascii` argument.
bkg_id
Set if the background model should be written out rather than the source.
ascii
If False then the data is written as a FITS format binary table. The default is False . The exact format of the output file depends on the I/O library in use (Crates or AstroPy).
clobber
If `outfile` is not none , then this flag controls whether an existing file can be overwritten ( True ) or if it raises an exception ( False , the default setting).

Notes

The function does not follow the normal Python standards for parameter use, since it is designed for easy interactive use. When called with a single un-named argument, it is taken to be the `filename` parameter. If given two un-named arguments, then they are interpreted as the `id` and `filename` parameters, respectively. The remaining parameters are expected to be given as named arguments.

The output file contains the columns x and source for 1D data sets. The residuals array respects any filter or (for PHA files), grouping settings.

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.

December 2023