plot_bkg_fit_delchi

sherpa.astro.ui.plot_bkg_fit_delchi(id=None, bkg_id=None, replot=False, overplot=False, clearwindow=True)

Plot the fit results, and the residuals, for the background of a PHA data set.

This creates two plots - the first from plot_bkg_fit and the second from plot_bkg_delchi - for a data set.

Parameters:
  • id (int or str, optional) – The data set that provides the data. If not given then the default identifier is used, as returned by get_default_id.
  • bkg_id (int or str, optional) – Identify the background component to use, if there are multiple ones associated with the data set.
  • replot (bool, optional) – Set to True to use the values calculated by the last call to plot_bkg_fit_delchi. The default is False.
  • overplot (bool, optional) – If True then add the data to an exsiting plot, otherwise create a new plot. The default is False.
  • clearwindow (bool, optional) – When using ChIPS for plotting, should the existing frame be cleared before creating the plot?
Raises:

See also

get_bkg_fit_plot()
Return the data used by plot_bkg_fit.
get_bkg_delchi_plot()
Return the data used by plot_bkg_delchi.
plot()
Create one or more plot types.
plot_bkg()
Plot the background values for a PHA data set.
plot_bkg_model()
Plot the model for the background of a PHA data set.
plot_bkg_fit()
Plot the fit results (data, model) for the background of a PHA data set.
plot_bkg_fit_resid()
Plot the fit results, and the residuals, for the background of a PHA data set.
plot_fit()
Plot the fit results (data, model) for a data set.
set_analysis()
Set the units used when fitting and displaying spectral data.

Examples

Plot the background fit and residuals (normalised by the error) to the default data set:

>>> plot_bkg_fit_delchi()