Last modified: December 2024

URL: https://cxc.cfa.harvard.edu/sherpa/ahelp/get_bkg_source_plot.html
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AHELP for CIAO 4.17 Sherpa

get_bkg_source_plot

Context: data

Synopsis

Return the data used by plot_bkg_source.

Syntax

get_bkg_source_plot(id=None, lo=None, hi=None, bkg_id=None, recalc=True)

Examples

Example 1

Retrieve the source plot information for the background of the default data set and display it:

>>> splot = get_bkg_source_plot()
>>> print(splot)

Example 2

Return the background plot data for data set 2, and then use it to create a plot:

>>> s2 = get_bkg_source_plot(2)
>>> s2.plot()

Example 3

Create a plot of the first two background components of the 'histate' data set, overplotting the second on the first:

>>> b1 = get_bkg_source_plot('histate', bkg_id=1)
>>> b2 = get_bkg_source_plot('histate', bkg_id=2)
>>> b1.plot()
>>> b2.overplot()

Example 4

Retrieve the background source plots for the 0.5 to 7 range of the 'jet' and 'core' data sets and display them on the same plot:

>>> splot1 = get_bkg_source_plot(id='jet', lo=0.5, hi=7)
>>> splot2 = get_bkg_source_plot(id='core', lo=0.5, hi=7)
>>> splot1.plot()
>>> splot2.overplot()

Example 5

For a PHA data set, the units on both the X and Y axes of the plot are controlled by the `set_analysis` command. In this case the Y axis will be in units of photons/s/cm^2 and the X axis in keV:

>>> set_analysis('energy', factor=1)
>>> splot = get_bkg_source_plot()
>>> print(splot)

PARAMETERS

The parameters for this function are:

Parameter Type information Definition
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` .
lo number, optional The low value to plot.
hi number, optional The high value to plot.
bkg_id int, str, or None, optional Identify the background component to use, if there are multiple ones associated with the data set.
recalc bool, optional If False then the results from the last call to `plot_bkg_source` (or `get_bkg_source_plot` ) are returned, otherwise the data is re-generated.

Return value

The return value from this function is:

source -- An object representing the data used to create the plot by `plot_bkg_source` .


Bugs

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

See Also

confidence
get_conf, get_conf_results, get_covar, get_covar_opt, get_covar_results, get_covariance_results, get_int_proj, get_int_unc, get_proj, get_proj_opt, get_proj_results, get_projection_results, get_reg_proj, get_reg_unc
contrib
get_chart_spectrum, get_data_prof, get_data_prof_prefs, get_delchi_prof, get_delchi_prof_prefs, get_fit_prof, get_marx_spectrum, get_model_prof, get_model_prof_prefs, get_resid_prof, get_resid_prof_prefs, get_source_prof, get_source_prof_prefs, plot_chart_spectrum, plot_marx_spectrum, prof_data, prof_delchi, prof_fit, prof_fit_delchi, prof_fit_resid, prof_model, prof_resid, prof_source
data
copy_data, dataspace1d, dataspace2d, datastack, delete_data, fake, get_areascal, get_arf, get_arf_plot, get_axes, get_backscal, get_bkg, get_bkg_arf, get_bkg_chisqr_plot, get_bkg_delchi_plot, get_bkg_fit_plot, get_bkg_model, get_bkg_model_plot, get_bkg_plot, get_bkg_ratio_plot, get_bkg_resid_plot, get_bkg_rmf, get_bkg_scale, get_bkg_source, get_coord, get_counts, get_data, get_data_contour, get_data_contour_prefs, get_data_image, get_data_plot, get_data_plot_prefs, get_dep, get_dims, get_error, get_exposure, get_grouping, get_indep, get_quality, get_rmf, get_specresp, get_staterror, get_syserror, group, group_adapt, group_adapt_snr, group_bins, group_counts, group_snr, group_width, load_ascii, load_data, load_grouping, load_quality, set_data, set_quality, ungroup, unpack_ascii, unpack_data
filtering
get_filter, load_filter, set_filter
fitting
calc_stat_info, get_stat_info
info
get_default_id, list_data_ids, list_model_ids, list_response_ids, list_stats, show_bkg_model, show_bkg_source
methods
get_draws, get_iter_method_name, get_iter_method_opt, get_method, get_method_name, get_method_opt
modeling
add_model, add_user_pars, clean, create_model_component, delete_bkg_model, delete_model, delete_model_component, get_model, get_model_autoassign_func, get_model_component, get_model_component_image, get_model_component_plot, get_model_plot, get_num_par, get_num_par_frozen, get_num_par_thawed, get_order_plot, get_par, get_pileup_model, get_response, get_source, get_source_component_image, get_source_component_plot, get_source_contour, get_source_image, get_source_plot, image_model, image_model_component, image_source, image_source_component, integrate, link, load_table_model, load_template_interpolator, load_template_model, load_user_model, normal_sample, reset, save_model, save_source, set_bkg_model, set_bkg_source, set_full_model, set_model, set_model_autoassign_func, set_pileup_model, set_source, t_sample, uniform_sample
plotting
get_cdf_plot, get_energy_flux_hist, get_pdf_plot, get_photon_flux_hist, get_pvalue_plot, get_pvalue_results, get_split_plot, plot, plot_arf, plot_bkg, plot_bkg_chisqr, plot_bkg_delchi, plot_bkg_fit, plot_bkg_fit_delchi, plot_bkg_fit_resid, plot_bkg_model, plot_bkg_ratio, plot_bkg_resid, plot_bkg_source, plot_cdf, plot_chisqr, plot_data, plot_delchi, plot_energy_flux, plot_fit, plot_fit_delchi, plot_fit_resid, plot_model, plot_model_component, plot_order, plot_pdf, plot_photon_flux, plot_pvalue, plot_ratio, plot_resid, plot_scatter, plot_source, plot_source_component, plot_trace, set_xlinear, set_xlog, set_ylinear, set_ylog
psfs
delete_psf, get_psf, get_psf_contour, get_psf_image, get_psf_plot, load_conv, plot_kernel
saving
save_delchi, save_error, save_filter, save_grouping, save_quality, save_resid, save_staterror, save_syserror
statistics
get_chisqr_plot, get_delchi_plot, get_prior, get_sampler, get_stat, get_stat_name
utilities
calc_chisqr, calc_data_sum, calc_data_sum2d, calc_energy_flux, calc_ftest, calc_kcorr, calc_mlr, calc_model_sum, calc_model_sum2d, calc_photon_flux, calc_source_sum, calc_source_sum2d, calc_stat, eqwidth, get_analysis, get_rate
visualization
contour, contour_data, contour_model, contour_ratio, contour_resid, histogram1d, histogram2d, image_data, image_getregion, rebin