## Contextual List of Ahelp Files

Context | Topic | Summary | ||
---|---|---|---|---|

confidence | conf | Estimate confidence intervals for selected thawed parameters based on confidence method | ||

covariance | Estimate confidence intervals for selected thawed parameters based on covariance method | |||

get_conf | Return information regarding the confidence method. | |||

get_covar | Return settings or results for the covariance method. | |||

get_int_proj | Return the confidence data defining an interval projection plot | |||

get_int_unc | Return the confidence data defining an int_unc() plot | |||

get_proj | Return information regarding the projection method. | |||

get_reg_proj | Return the confidence data defining a region projection contour plot | |||

get_reg_unc | Return the confidence data defining a reg_unc() contour plot | |||

int_proj | Create a confidence plot of fit statistic vs. parameter value. | |||

int_unc | Create a confidence plot of fit statistic vs. parameter value. | |||

projection | Estimate confidence intervals for selected thawed parameters based on projection method | |||

reg_proj | Create a confidence contour of fit statistic vs. two thawed parameter values. | |||

reg_unc | Create a confidence contour of fit statistic vs. two thawed parameter values. | |||

set_conf_opt | Set the options for confidence | |||

set_covar_opt | Set the options for covariance | |||

set_proj_opt | Set the options for projection | |||

contrib | estimate_weighted_expmap | Return the estimated exposure map value by weighting an ARF by a spectral model. | ||

get_chart_spectrum | Return the model spectrum in the form required by ChaRT | |||

get_data_prof_prefs | The plot preferences for radial or elliptical profiles of imaging data. | |||

get_data_prof | Return the data used to create the radial or elliptical profile of imaging data. | |||

get_delchi_prof_prefs | The plot preferences for radial or elliptical profiles of the residuals (data - model)/error to imaging data. | |||

get_delchi_prof | Return the data used to create the radial or elliptical profile of the residuals (data - model)/error to imaging data. | |||

get_fit_prof | Return the data used to create the radial or elliptical profile of fits to imaging data. | |||

get_instmap_weights | Return the model spectrum in the form required by the spectrumfile parameter of mkinstmap | |||

get_model_prof_prefs | The plot preferences for radial or elliptical profiles of the model (after any PSF convolution) for imaging data. | |||

get_model_prof | Return the data used to create the radial or elliptical profile of the source model (after any PSF convolution) for imaging data. | |||

get_resid_prof_prefs | The plot preferences for radial or elliptical profiles of the residuals (data - model) to imaging data. | |||

get_resid_prof | Return the data used to create the radial or elliptical profile of the residuals (data - model) to imaging data. | |||

get_source_prof_prefs | The plot preferences for radial or elliptical profiles of the source model for imaging data. | |||

get_source_prof | Return the data used to create the radial or elliptical profile of the source model (before any PSF convolution) for imaging data. | |||

plot_chart_spectrum | Plot up the model spectrum in the form required by ChaRT | |||

plot_instmap_weights | Plot up the model spectrum in the form required by mkinstmap | |||

prof_data | Plot a radial or elliptical profile of imaging data. | |||

prof_delchi | Plot a radial or elliptical profile of the residuals (data - model)/error to imaging data. | |||

prof_fit_delchi | Plot a radial or elliptical profile of the fit (data and model) and residuals (data-model)/error to imaging data. | |||

prof_fit_resid | Plot a radial or elliptical profile of the fit (data and model) and residuals (data-model) to imaging data. | |||

prof_fit | Plot a radial or elliptical profile of the fit (data and model) to imaging data. | |||

prof_model | Plot a radial or elliptical profile of the model (after any PSF convolution) for imaging data. | |||

prof_resid | Plot a radial or elliptical profile of the residuals (data - model) to imaging data. | |||

prof_source | Plot a radial or elliptical profile of the source model for imaging data. | |||

save_chart_spectrum | Write out the model spectrum in the form required by ChaRT | |||

save_instmap_weights | Write out the model spectrum in the form required by mkinstmap | |||

sherpa_chart | Create and view spectral files for ChaRT (CIAO contributed package). | |||

sherpa_contrib | Contributed CIAO routines for Sherpa. | |||

sherpa_profiles | Radial profiles of imaging data in Sherpa (CIAO contributed package). | |||

sherpa_utils | Utility routines for Sherpa (CIAO contributed package). | |||

data | copy_data | Copy a data set by data ID to a new data ID (deep copy) | ||

dataspace1d | Create a blank 1D dataset | |||

dataspace2d | Create a blank 2D dataset | |||

delete_data | Delete a data set by ID | |||

fake_pha | Simulate a PHA dataset with faked counts using Poisson noise | |||

fake | Simulate a generic data set with a chosen model and add noise | |||

get_areascal | Return the source or background pixel fractional area scale | |||

get_arf_plot | Return the data and preferences defining an ARF plot | |||

get_arf | Return a source or background ARF by data set ID | |||

get_axes | Return the alternate grid of a data set | |||

get_backscal | Return the source or background extraction region area | |||

get_bkg_plot | Return the data and preferences defining a background plot. | |||

get_bkg_scale | Returns the complete background scaling factor | |||

get_bkg | Return the background data, ARF, RMF, or model. | |||

get_coord | Return the coordinate system of an image | |||

get_counts | Return the dependent variable array (e.g., counts) of a data set | |||

get_data_plot | Return a plot, contour, or image of the data, or the associated preferences | |||

get_data | Return details of a Sherpa data set by ID. | |||

get_dep | Return the dependent variable array (e.g., counts) of a data set | |||

get_dims | Return the length of the x-dimension of a data set | |||

get_error | Return the total errors on the counts of a data set | |||

get_exposure | Return the exposure time for a source or background data set | |||

get_grouping | Obtain the grouping flags from a data set | |||

get_indep | Return the independent variable array of a data set | |||

get_quality | Obtain the quality flags from a data set | |||

get_rmf | Return a source or background RMF by data set ID | |||

get_specresp | Return the effective area of a PHA spectrum | |||

get_staterror | Return the statistical errors on the counts of a data set | |||

get_syserror | Return the systematic errors on the counts of a data set | |||

group | Enable and specify the grouping settings of a spectral data set | |||

load_arf | Load a source or background ARF | |||

load_arrays | Load data from variables containing arrays. | |||

load_ascii | Load ASCII data | |||

load_bkg_arf | Load a background ARF | |||

load_bkg_rmf | Load a background RMF | |||

load_bkg | Load a PHA background spectrum | |||

load_data | Load 1D data from a file | |||

load_grouping | Load a grouping scheme from a FITS table or ASCII file | |||

load_image | Load an image | |||

load_multi_arfs | Load multiple ARFs | |||

load_multi_rmfs | Load multiple RMFs | |||

load_pha | Load PHA source spectra | |||

load_quality | Load quality flags from a FITS table or ASCII file | |||

load_rmf | Load a source or background RMF | |||

load_staterror | Load statistical errors | |||

load_syserror | Load systematic errors | |||

load_table | Load tabular data | |||

pack_image | Pack image data into an IMAGECrate | |||

pack_pha | Pack PHA data into a PHACrate | |||

pack_table | Pack tabular data into a TABLECrate | |||

set_areascal | Set the fractional area | |||

set_arf | Set an ARF dataset | |||

set_backscal | Set the extraction region area | |||

set_bkg | Set a background PHA dataset | |||

set_coord | Set the image coordinate system | |||

set_counts | Set the dependent variable (e.g. counts) of a dataset | |||

set_data | Set a source dataset | |||

set_exposure | Set the exposure time | |||

set_grouping | Apply user-defined grouping to a dataset | |||

set_quality | Apply user-defined quality flags to a data set | |||

set_rmf | Set an RMF dataset | |||

set_staterror | Set the statistical errors | |||

set_syserror | Set the systematic errors | |||

subtract | Perform background subtraction | |||

ungroup | Ungroup PHA data | |||

unpack_arf | Unpack an ARF from an ARFCrate | |||

unpack_arrays | Unpack arrays from a CrateData object | |||

unpack_ascii | Unpack ASCII data from a crate | |||

unpack_bkg | Unpack PHA data from a PHACrate | |||

unpack_data | Unpack a table data, ASCII data, or a spectrum from a crate | |||

unpack_image | Unpack image data from an IMAGECrate | |||

unpack_pha | Unpack PHA data from a PHACrate | |||

unpack_rmf | Unpack an RMF from a crate | |||

unpack_table | Unpack tabular data from a TABLECrate | |||

unsubtract | Undo background subtraction | |||

filtering | get_filter | Return the filter of a data set | ||

ignore2d_id | Apply an exclude region filter to 2-D data by data set ID(s). | |||

ignore2d | Apply an exclude region filter to all 2-D data sets | |||

ignore_bad | Ignore bins according to quality flags | |||

ignore_id | Apply an exclude filter to 1-D data by data set ID | |||

ignore | Apply an exclude filter to all 1D data sets | |||

load_filter | Load filter from a FITS table, FITS image, or ASCII file | |||

notice2d_id | Apply an include filter to 2D data by dataset id | |||

notice2d | Apply an include filter to all 2D datasets | |||

notice_id | Apply an include filter to 1D data by dataset id | |||

notice | Apply an include filter to all 1D datasets | |||

set_filter | Apply user-defined filter to a data set | |||

show_filter | Display the filters applied to a dataset | |||

fitting | calc_stat_info | Returns goodness-of-fit statistics associated with a Sherpa data set. | ||

fit | Perform a fit using current optimization method and fit statistic. | |||

get_fit | Return model fit information associated with a Sherpa data set. | |||

get_stat_info | Parses the goodness-of-fit statistic information returned by calc_stat_info() | |||

info | get_default_id | Return the default data set ID in a Sherpa session. | ||

list_bkg_ids | List all background IDs associated with a data set. | |||

list_data_ids | List all data set IDs in a Sherpa session. | |||

list_functions | List all available Sherpa functions | |||

list_model_ids | List all current model IDs. | |||

list_response_ids | List all response IDs associated with a data set. | |||

list_stats | List all Sherpa fit statistics. | |||

show_all | Reports the current state of the Sherpa session | |||

show_bkg_model | Display the background convolved model | |||

show_bkg_source | Display the background unconvolved model | |||

show_bkg | Display PHA background data set information | |||

show_conf | Display the confidence information | |||

show_covar | Display the covariance information | |||

show_data | Display the data sets | |||

show_fit | Display the fit information | |||

show_method | Display the optimization method | |||

show_model | Display the convolved source model | |||

show_proj | Display the projection information | |||

show_source | Display the unconvolved source model | |||

show_stat | Display the fit statistic | |||

methods | get_draws | Run the pyBLoCXS MCMC-based algorithm using the current sampler. | ||

get_iter_method_name | Return the name of the current iterative fitting method | |||

get_iter_method_opt | Return the value of the specified option for the current iterative fitting method | |||

get_method | Return information on the optimization method | |||

gridsearch | Grid searching optimization method | |||

levmar | Levenberg-Marquardt optimization method | |||

list_iter_methods | List all Sherpa iterative fitting methods. | |||

list_methods | List all Sherpa optimization methods. | |||

moncar | Monte Carlo optimization method | |||

neldermead | Nelder-Mead Simplex optimization method | |||

pyblocxs | MCMC-based algorithm for Bayesian Low-Count X-ray Spectral (BLoCXS) analysis | |||

set_iter_method_opt | Set the value of the specified option for the current iterative fitting method | |||

set_iter_method | Set the iterative fitting method | |||

set_method_opt | Set the options of the chosen optimization method | |||

set_method | Set the optimization method | |||

modeling | add_model | Add a user-defined model class as a Sherpa model type | ||

add_user_pars | Add parameters to a user-defined model | |||

clean | Erase data and model settings in a Sherpa session | |||

create_model_component | Create a new model component | |||

delete_bkg_model | Delete a background model | |||

delete_model_component | Delete a model component | |||

delete_model | Delete a Sherpa model by model ID | |||

freeze | Freeze model parameters, so they do not vary during a fit. | |||

get_model_autoassign_func | Return the method for storing model identifiers | |||

get_model_component_image | Returns the 2D data and coordinate settings defining the convolved model component image | |||

get_model_component_plot | Returns the data and preferences defining the convolved model component plot | |||

get_model_component | Returns the parameters for the specified model component | |||

get_model_plot | Return a plot, contour, or image of a model, or the associated preferences | |||

get_model | Return the model, model parameters, or model type | |||

get_num_par | Returns the number of parameters (total, frozen, or thawed) in a model. | |||

get_order_plot | Return the data and preferences defining a plot of model spectral orders | |||

get_par | Returns a model parameter. | |||

get_pileup_model | Return the pileup model associated with a data set. | |||

get_response | Get the associated instrument response model of a PHA data set by data ID | |||

get_source_component_image | Returns the 2D data and coordinate settings defining the unconvolved model component image | |||

get_source_component_plot | Returns the data and preferences defining the unconvolved model component plot | |||

get_source | Return the unconvolved model associated with a Sherpa data set ID. | |||

guess | Estimate initial parameter values and ranges | |||

image_model_component | Sends image of the convolved model component to ds9. | |||

image_model | Send image of the model to ds9. | |||

image_source_component | Sends image of the unconvolved model component to ds9. | |||

image_source | Image the 2-D unconvolved model | |||

integrate1d | Helper function to control the integration of 1D non-XSpec model expressions | |||

integrate | Controlling the integration of model components | |||

link | Link a model parameter to another model parameter. | |||

load_table_model | Load data into a table model | |||

load_template_model | Load a set of template models | |||

load_user_model | Load a user-defined model | |||

normal_sample | Sample the current set of thawed parameters from a uni-variate or multi-variate normal distribution. | |||

paramprompt | Toggle parameter prompting for initial model values | |||

reset | Reset model parameter values after a fit | |||

save_model | Save the convolved source model to a FITS table or ASCII file | |||

save_source | Save the unconvolved source model to a FITS table or ASCII file | |||

set_bkg_model | Set a background model expression | |||

set_full_model | Set the complete convolved source and background model expressions to be used for fitting a data set | |||

set_model_autoassign_func | Define a method for storing model identifiers | |||

set_par | Set initial values for a model parameter | |||

set_pileup_model | Set a pileup model to be used in fitting a dataset | |||

set_source | Set the source model expression to be used for fitting a dataset | |||

set_xsabund | Set XSPEC solar abundance | |||

set_xscosmo | Set XSPEC cosmology settings (H0, q0, L0) | |||

set_xsxsect | Set XSPEC photoelectric cross-section | |||

set_xsxset | Set environment variables for XSPEC models | |||

thaw | Thaw model parameters so they vary during a fit | |||

t_sample | Sample the current set of thawed parameters from a Student's t-distribution. | |||

uniform_sample | Sample the current set of thawed parameters from a uniform distribution. | |||

unlink | Remove a link between model parameters | |||

models | absorptionedge | Optical model of interstellar absorption. | ||

absorptiongaussian | A Gaussian model of an absorption feature. | |||

absorptionlorentz | A Lorentz model of an absorption feature. | |||

absorptionvoigt | A Voigt model of an absorption feature. | |||

accretiondisk | A model of emission due to an accretion disk. | |||

atten | Attenuation by ISM. | |||

bbodyfreq | Blackbody as a function of frequency. | |||

bbody | Blackbody as a function of energy. | |||

beta1d | 1-D Lorentz model with a varying power law. | |||

beta2d | 2-D Lorentz model with a varying power law. | |||

blackbody | Blackbody function | |||

box1d | 1-D box function. | |||

box2d | 2-D box function. | |||

bpl1d | Broken power law function. | |||

bremsstrahlung | Bremsstrahlung function | |||

brokenpowerlaw | Broken power-law function | |||

ccm | Interstellar extinction function | |||

const1d | 1-D constant amplitude model. | |||

const2d | 2-D constant amplitude model. | |||

cos | Cosine function. | |||

delta1d | 1-D delta function. | |||

delta2d | 2-D delta function. | |||

dered | Dereddening function. | |||

devaucouleurs2d | DeVaucouleurs profile. | |||

edge | Photoabsorption edge model. | |||

emissiongaussian | A Gaussian model of an emission feature. | |||

emissionlorentz | A Lorentz model of an emission feature. | |||

emissionvoigt | Voigt model of an emission feature | |||

erfc | A 1-D complementary error function. | |||

erf | A 1-D error function. | |||

exp10 | Exponential function, base 10. | |||

exp | Exponential function. | |||

fm | Fitzpatrick and Massa extinction curve | |||

gauss1d | 1-D unnormalized Gaussian function. | |||

gauss2d | 2-D unnormalized Gaussian function. | |||

hubblereynolds | Hubble-Reynolds profile. | |||

jdpileup | A CCD pileup model developed by John Davis of MIT. | |||

linebroad | Line-broadening profile. | |||

list_models | List all Sherpa models. | |||

list_model_components | List all models established in a Sherpa session. | |||

lmc | Extinction curve for the Large Magellanic Cloud | |||

log10 | Logarithm function, base 10. | |||

logabsorption | Logarithmic absorption model | |||

logemission | Logarithmic emission model | |||

logparabola | Log-parabolic function | |||

log | Natural logarithm function. | |||

lorentz1d | 1-D normalized Lorentzian function. | |||

lorentz2d | 2-D unnormalized Lorentzian function. | |||

models | Summary of Available Models | |||

normbeta1d | 1-D normalized beta function. | |||

normgauss1d | 1-D normalized Gaussian function. | |||

normgauss2d | 2-D normalized Gaussian function. | |||

opticalgaussian | Gaussian model of an absorption feature | |||

poisson | Poisson function. | |||

polynom1d | 1-D polynomial function. | |||

polynom2d | 2-D polynomial function. | |||

polynomial | 1-D polynomial function of order <= 5 | |||

powerlaw | Power law function | |||

powlaw1d | 1-D power law. | |||

recombination | Model of continuum emission due to recombination | |||

scale1d | 1-D constant amplitude model. | |||

scale2d | 2-D constant amplitude model. | |||

schechter | Schechter function. | |||

seaton | Galactic extinction model | |||

sin | Sine function. | |||

smc | Extinction curve for the Small Magellanic Cloud | |||

sm | Galactic extinction curve | |||

sqrt | Square root function. | |||

stephi1d | 1-D step function. | |||

steplo1d | 1-D step function. | |||

tablemodel | Using an n-dimensional array of values as a model (table model). | |||

tan | Tangent function. | |||

xgal | Extragalactic extinction function | |||

xsabsori | Ionized absorber. XSpec model. | |||

xsacisabs | Decay in the ACIS quantum efficiency. XSpec model. | |||

xsapec | APEC thermal plasma model. XSpec model. | |||

xsbapec | APEC thermal plasma model with velocity broadening as a free parameter. XSpec model. | |||

xsbbodyrad | Blackbody spectrum with norm proportional to surface area. XSpec model. | |||

xsbbody | Blackbody spectrum. XSpec model. | |||

xsbexrav | E-folded broken power law reflected from neutral matter. XSpec model. | |||

xsbexriv | E-folded broken power law reflected from ionized matter. XSpec model. | |||

xsbkn2pow | Broken power law, two break energies. XSpec model. | |||

xsbknpower | Broken power law. XSpec model. | |||

xsbmc | Comptonization by relativistically moving matter. XSpec model. | |||

xsbremss | Thermal bremsstrahlung. XSpec model. | |||

xsbvapec | APEC thermal plasma model with variable abundances and velocity broadening as a free parameter. XSpec model. | |||

xsbvvapec | APEC thermal plasma model with variable abundances and velocity broadening as a free parameter. XSpec model. | |||

xsc6mekl | 6th-order Chebyshev polynomial DEM using mekal. XSpec model. | |||

xsc6pmekl | Exponential of 6th-order Chebyshev polyn. DEM using mekal. XSpec model. | |||

xsc6pvmkl | Variable abundance version of c6pmekl. XSpec model. | |||

xsc6vmekl | Variable abundance version of c6mekl. XSpec model. | |||

xscabs | Compton scattering (non-relativistic). XSpec model. | |||

xscemekl | Multi-temperature mekal. XSpec model. | |||

xscevmkl | Multi-temperature vmeka. XSpec model. | |||

xscflow | Cooling flow model. XSpec model. | |||

xscompbb | Comptonized blackbody spectrum after Nishimura et al. (1986). XSpec model. | |||

xscompls | Comptonization spectrum after Lamb and Sanford (1979). XSpec model. | |||

xscompps | Comptonization, Poutanen and Svenson. XSpec model. | |||

xscompst | Comptonization spectrum after Sunyaev and Titarchuk (1980). XSpec model. | |||

xscompth | Component of Paolo Coppi's hybrid (thermal/non-thermal) hot plasma emission models. | |||

xscomptt | Comptonization spectrum after Titarchuk (1994). XSpec model. | |||

xsconstant | Energy-independent multiplicative factor. XSpec model. | |||

xscplinear | Non-physical piecewise-linear model for low count background spectra. XSpec model. | |||

xscutoffpl | Power law with high energy exponential cutoff. XSpec model. | |||

xscyclabs | Cyclotron absorption line. XSpec model. | |||

xsdiskbb | Multiple blackbody disk model. XSpec model. | |||

xsdiskir | Irradiated inner and outer disk. XSpec model. | |||

xsdiskline | Line emission from relativistic accretion disk. XSpec model. | |||

xsdiskm | Disk model with gas pressure viscosity. XSpec model. | |||

xsdisko | Modified blackbody disk model. XSpec model. | |||

xsdiskpbb | Accretion disk, power-law dependence for T(r). XSpec model. | |||

xsdiskpn | Accretion disk around a black hole. XSpec model. | |||

xsdisk | Disk model. XSpec model. | |||

xsdust | Dust scattering out of the beam. XSpec model. | |||

xsedge | Absorption edge. XSpec model. | |||

xseplogpar | Log-parabolic blazar model with nFn normalization. XSpec model. | |||

xseqpair | Component of Paolo Coppi's hybrid (thermal/non-thermal) hot plasma emission models | |||

xseqtherm | Component of Paolo Coppi's hybrid (thermal/non-thermal) hot plasma emission models | |||

xsequil | Equilibrium ionization collisional plasma model from Borkowski. XSpec model. | |||

xsexpabs | Low-energy exponential cutoff. XSpec model. | |||

xsexpdec | An exponential decay. XSpec model. | |||

xsexpfac | Exponential factor. XSpec model. | |||

xsezdiskbb | Multiple blackbody disk model with zero-torque inner boundary. XSpec model. | |||

xsgabs | A multiplicative gaussian absorption line. XSpec model. | |||

xsgadem | Plasma emission, multi-temperature with gaussian distribution of emission measure. XSpec model. | |||

xsgaussian | Simple gaussian line profile. XSpec model. | |||

xsgnei | Generalized single ionization NEI plasma model. XSpec model. | |||

xsgrad | GR accretion disk around a black hole. XSpec model. | |||

xsgrbm | Gamma-ray burst model. XSpec model. | |||

xshighecut | High energy cutoff. XSpec model. | |||

xshrefl | Simple reflection model good up to 15 keV. XSpec model. | |||

xskerrbb | Multi-temperature blackbody model for thin accretion disk around a Kerr black hole. XSpec model. | |||

xskerrdisk | Accretion disk line emission with BH spin as free parameter. XSpec model. | |||

xskerrd | Optically thick accretion disk around a Kerr black hole. XSpec model. | |||

xslaor2 | Accretion disk with broken-power law emissivity profile, black hole emission line. XSpec model. | |||

xslaor | Line from accretion disk around a black hole. XSpec model. | |||

xslogpar | Log-parabolic blazar model. XSpec model. | |||

xslorentz | Lorentzian line profile. XSpec model. | |||

xsmekal | Mewe-Kaastra-Liedahl thermal plasma (1995). XSpec model. | |||

xsmeka | Mewe-Gronenschild-Kaastra thermal plasma (1992). XSpec model. | |||

xsmkcflow | Cooling flow model based on mekal. XSpec model. | |||

xsnei | Simple nonequilibrium ionization plasma model. XSpec model. | |||

xsnotch | Notch line absorption. XSpec model. | |||

xsnpshock | Plane-parallel shock with ion and electron temperatures. XSpec model. | |||

xsnsagrav | NS H atmosphere model for different g. XSpec model. | |||

xsnsatmos | NS Hydrogen Atmosphere model with electron conduction and self-irradiation. XSpec model. | |||

xsnsa | Spectra in the X-ray range (0.05-10 keV) emitted from a hydrogen atmosphere of a neutron star. XSpec model. | |||

xsnsmax | Neutron Star Magnetic Atmosphere. XSpec model. | |||

xsnteea | Pair plasma model. XSpec model. | |||

xsnthcomp | Thermally comptonized continuum. XSpec model. | |||

xsoptxagnf | Color-temperature-corrected disc and energetically coupled Comptonization model for AGN. XSpec model. | |||

xsoptxagn | Color-temperature-corrected disc and energetically coupled Comptonization model for AGN. XSpec model. | |||

xspcfabs | Partial covering fraction absorption. XSpec model. | |||

xspegpwrlw | Power law with pegged normalization. XSpec model. | |||

xspexmon | Neutral Compton reflection with self-consistent Fe and Ni lines. XSpec model. | |||

xspexrav | Exponentially cutoff power law reflected from neutral matter. XSpec model. | |||

xspexriv | Exponentially cutoff power law reflected from ionized matter. XSpec model. | |||

xsphabs | Photo-electric absorption. XSpec model. | |||

xsplabs | Absorption model with power law dependence on energy. XSpec model. | |||

xsplcabs | Cutoff power law observed through dense, cold matter. XSpec model. | |||

xsposm | Positronium continuum. XSpec model. | |||

xspowerlaw | Simple photon power law. XSpec model. | |||

xspshock | Constant temperature, plane-parallel shock plasma model. XSpec model. | |||

xspwab | An extension of partial covering fraction absorption into a power-law distribution of covering fraction. XSpec model. | |||

xsraymond | Raymond-Smith thermal plasma. XSpec model. | |||

xsredden | IR/optical/UV extinction from Cardelli et al. (1989). XSpec model. | |||

xsredge | Recombination edge. XSpec model. | |||

xsrefsch | E-folded power law reflected from an ionized relativistic disk. XSpec model. | |||

xssedov | Sedov model with electron and ion temperatures. XSpec model. | |||

xssirf | Self-irradiated funnel. XSpec model. | |||

xssmedge | Smoothed absorption edge. XSpec model. | |||

xsspexpcut | Super-exponential cutoff absorption. XSpec model. | |||

xsspline | Spline multiplicative factor. XSpec model. | |||

xssrcut | Synchrotron radiation from cutoff electron distribution. XSpec model. | |||

xssresc | Synchrotron radiation from escape-limited electron distribution. XSpec model. | |||

xssss_ice | Einstein SSS ice absorption. XSpec model. | |||

xsstep | Step function convolved with gaussian. XSpec model. | |||

xsswind1 | Absorption by partially ionized material with large velocity shear. XSpec model. | |||

xstbabs | Calculates the absorption of X-rays by the ISM. XSpec model. | |||

xstbgrain | Calculates the absorption of X-rays by the ISM with variable hydrogen to H2 ratio and grain parameters. XSpec model. | |||

xstbvarabs | Calculates the absorption of X-rays by the ISM, allowing user to vary all abundances, depletion factors, and grain properties. XSpec model. | |||

xsuvred | UV reddening. XSpec model. | |||

xsvapec | APEC thermal plasma model with variable abundances. XSpec model. | |||

xsvarabs | Photoelectric absorption with variable abundances. XSpec model. | |||

xsvbremss | Thermal bremsstrahlung spectrum with variable H/He. XSpec model. | |||

xsvequil | Ionization equilibrium collisional plasma model with variable abundances. XSpec model. | |||

xsvgadem | Plasma emission, multi-temperature with gaussian distribution of emission measure. XSpec model. | |||

xsvgnei | Non-equilibrium ionization collisional plasma model with variable abundances. XSpec model. | |||

xsvmcflow | Cooling flow model based on vmekal. XSpec model. | |||

xsvmekal | M-K-L thermal plasma with variable abundances. XSpec model. | |||

xsvmeka | M-G-K thermal plasma with variable abundances. XSpec model. | |||

xsvnei | Non-equilibrium ionization collisional plasma model with variable abundances. XSpec model. | |||

xsvnpshock | Plane-parallel shock plasma model with separate ion and electron temperatures and variable abundances. XSpec model. | |||

xsvphabs | Photoelectric absorption with variable abundances. XSpec model. | |||

xsvpshock | Constant temperature, plane-parallel shock plasma model with variable abundances. XSpec model. | |||

xsvraymond | Raymond-Smith thermal plasma with variable abundances. XSpec model. | |||

xsvsedov | Sedov model with separate ion and electron temperatures and variable abundances. XSpec model. | |||

xsvvapec | APEC thermal plasma model with variable abundances. XSpec model. | |||

xswabs | Photoelectric absorption (Morrison and McCammon). XSpec model. | |||

xswndabs | Photoelectric absorption with low energy window. XSpec model. | |||

xsxion | Reflected spectra of a photo-ionized accretion disk or ring. XSpec model. | |||

xszbbody | Redshifted blackbody. XSpec model. | |||

xszbremss | Redshifted thermal bremsstrahlung. XSpec model. | |||

xszdust | Extinction by dust grains. XSpec model. | |||

xszedge | Redshifted absorption edge. XSpec model. | |||

xszgauss | Redshifted gaussian. XSpec model. | |||

xszhighect | Redshifted high energy cutoff. XSpec model. | |||

xszigm | UV/Optical attenuation by the intergalactic medium. | |||

xszpcfabs | Redshifted partial covering absorption. XSpec model. | |||

xszphabs | Redshifted photoelectric absorption. XSpec model. | |||

xszpowerlw | Redshifted power law. XSpec model. | |||

xszredden | Redshifted version of redden. XSpec model. | |||

xszsmdust | Extinction by dust grains in starburst galaxies. XSpec model. | |||

xsztbabs | Calculates the absorption of X-rays by the ISM for modeling redshifted absorption. Does not include a dust component. XSpec model. | |||

xszvarabs | Redshifted photoelectric absorption with variable abundances. XSpec model. | |||

xszvfeabs | Redshifted absorption with variable iron abundance. XSpec model. | |||

xszvphabs | Redshifted photoelectric absorption with variable abundances. XSpec model. | |||

xszwabs | Redshifted "Wisconsin absorption." XSpec model. | |||

xszwndabs | Redshifted photoelectric absorption with low energy window. XSpec model. | |||

xszxipcf | Partial covering absorption by partially ionized material. XSpec model. | |||

xs | XSpec model functions. | |||

plotting | get_energy_flux_hist | Calculate a histogram of a simulated energy flux probability distribution | ||

get_lrt_plot | Access a histogram plot of likelihood ratio test results. | |||

get_lrt_results | Access the simulation results of the likelihood ratio test. | |||

get_photon_flux_hist | Calculate a histogram of a simulated photon flux probability distribution | |||

get_pvalue_plot | Access a histogram plot of likelihood ratio test results. | |||

get_pvalue_results | Access the simulation results of the likelihood ratio test. | |||

get_split_plot | Return plot attributes for multiple plots | |||

plot_arf | Plot an ARF | |||

plot_bkg | Plot information about background data | |||

plot_cdf | Plot a cumulative distribution function with lower, median, and upper quantiles. | |||

plot_chisqr | Plot the chi-squared statistic | |||

plot_data | Plot the dataset | |||

plot_delchi | Plot the delchi residuals of the fit: (data-model)/error | |||

plot_energy_flux | Plot the calculated energy flux distribution | |||

plot_fit | Plot the fit, fit plus delta chi, or fit plus residuals | |||

plot_lrt | Plot a histogram of likelihood ratio test results. | |||

plot_model_component | Plots individual convolved source model components | |||

plot_model | Plot the convolved source model | |||

plot_order | Plot the convolved source model by order | |||

plot_pdf | Plot a binned probability density function. | |||

plot_photon_flux | Plot the calculated photon flux distribution | |||

plot_pvalue | Plot a histogram of likelihood ratio test results. | |||

plot_ratio | Plot the (data/model) ratio | |||

plot_resid | Plot the residuals of the fit: (data - model) | |||

plot_scatter | Create an X,Y scatter plot. | |||

plot_source_component | Plots individual unconvolved source model components | |||

plot_source | Plot the unconvolved source model | |||

plot_trace | Create a trace plot of iteration number vs. sampled value. | |||

plot | Plot multiple objects (data, model, residuals, etc.) | |||

set_xlinear | Changes the plot X axis to use a linear scale. | |||

set_xlog | Changes the plot x axis to use a logarithmic scale. | |||

set_ylinear | Changes the plot Y axis to use a linear scale. | |||

set_ylog | Changes the plot Y axis to use a logarithmic scale. | |||

psfs | contour_kernel | Create a contour plot of a PSF kernel | ||

contour_psf | Create a contour plot of a PSF | |||

delete_psf | Delete a PSF model | |||

get_kernel | Return kernel plot, image, and contour preferences. | |||

get_psf | Return PSF model data and plot, image, and contour preferences. | |||

image_kernel | Send a PSF kernel image to the imager (ds9). | |||

image_psf | Send a PSF image to the imager (ds9). | |||

load_conv | Load a 1D convolution kernel | |||

load_psf | Load a PSF model | |||

plot_kernel | Plot the PSF kernel | |||

plot_psf | Plot the PSF | |||

set_psf | Convolve the PSF model with the source model | |||

show_kernel | Display the PSF kernel | |||

show_psf | Display the PSF model | |||

saving | restore | Restore a previous Sherpa session from a file | ||

save_all | Save all the information about the current session | |||

save_arrays | Save a list of arrays as columns to a FITS table or ASCII file | |||

save_data | Save a Sherpa data set to an ASCII file. | |||

save_delchi | Save the delta chi fit residuals to a FITS table or ASCII file | |||

save_error | Save total errors to a FITS table or ASCII file | |||

save_filter | Save filter to a FITS table or ASCII file | |||

save_grouping | Save grouping flags to a FITS table or ASCII file | |||

save_image | Save image data to a file | |||

save_pha | Save a Sherpa data set to a PHA file. | |||

save_quality | Save quality flags to a FITS table or ASCII file | |||

save_resid | Save the simple data-model difference residuals | |||

save_staterror | Save statistical errors to a FITS table or ASCII file | |||

save_syserror | Save systematic errors to a FITS table or ASCII file | |||

save_table | Save a Sherpa data set to a FITS or ASCII file. | |||

save | Save the current Sherpa session to a file | |||

script | Save every command typed in a Sherpa or ChIPS session to a file. | |||

sherpa | sherparc | The .sherpa.rc file provides user-configuration options for Sherpa | ||

sherpa | Introduction to Sherpa, the CIAO modeling and fitting package | |||

statistics | cash | A maximum likelihood function. | ||

chi2constvar | Chi-square statistic with constant variance computed from the counts data. | |||

chi2datavar | Chi-square statistic with variance computed from the data. | |||

chi2gehrels | Chi-square statistic with the Gehrels variance function. | |||

chi2modvar | Chi-square statistic with variance computed from model amplitudes. | |||

chi2xspecvar | Chi-square statistic with variance computed from data amplitudes. | |||

chisquare | About the chi-square statistic. | |||

cstat | A maximum likelihood function | |||

get_chisqr_plot | Return the data and preferences defining a chi^2 plot | |||

get_delchi_plot | Return the data and preferences defining a delta chi plot | |||

get_prior | Access the prior function associated with a Sherpa model parameter. | |||

get_sampler | Return information on the current pyBLoCXS sampler. | |||

get_stat | Return information on the fit statistic | |||

leastsq | Chi-square statistic with variance set to 1. | |||

list_priors | List thawed Sherpa model parameters with associated priors. | |||

list_samplers | List all available pyBLoCXS samplers. | |||

load_user_stat | Load a user-defined fit statistic | |||

set_prior | Define a prior function for a particular Sherpa model parameter. | |||

set_sampler_opt | Define sampler options for a pyBLoCXS chain. | |||

set_sampler | Set the current pyBLoCXS sampler. | |||

set_stat | Set the statistical method | |||

utilities | calc_chisqr | Calculate the Chi Squared statistic contribution per bin | ||

calc_data_sum2d | Calculate the sum of observed image counts | |||

calc_data_sum | Calculate the sum of observed data counts | |||

calc_energy_flux | Calculate the unconvolved model energy flux | |||

calc_ftest | Calculate the significance using the F test | |||

calc_kcorr | Calculate the k correction for a spectral model. | |||

calc_mlr | Calculate the Maximum Likelihood Ratio test | |||

calc_model_sum2d | Calculate the convolved 2D model amplitudes | |||

calc_model_sum | Calculate the sum of convolved model counts | |||

calc_photon_flux | Calculate the unconvolved model photon flux | |||

calc_source_sum2d | Calculate the unconvolved 2D model amplitudes | |||

calc_source_sum | Calculate the sum of unconvolved model amplitudes | |||

calc_stat | Calculate the fit statistic by data set ID | |||

eqwidth | Calculate the equivalent width of an emission or absorption line. | |||

gamma | Calculate the Gamma function | |||

get_analysis | Return the current units setting for a PHA data set | |||

get_rate | Return the measured count rate of a data set | |||

igamc | Calculate the complement of the regularized incomplete Gamma function (upper) | |||

igam | Calculate the regularized incomplete Gamma function (lower) | |||

incbet | Calculate the incomplete Beta function | |||

lgam | Calculate the log of the Gamma function | |||

sample_energy_flux | Sample the energy flux distribution | |||

sample_photon_flux | Sample the photon flux distribution | |||

set_analysis | Set the units for spectral analysis | |||

set_default_id | Set the default Sherpa data id | |||

visualization | contour_data | Open a contour plot of a data set in ChIPS | ||

contour_fit_resid | Create a contour plot of the fit and residuals | |||

contour_fit | Send a contour plot of the fit | |||

contour_model | Open a contour plot of a data set model in ChIPS | |||

contour_ratio | Open a contour plot of a data-to-model ratio in ChIPS | |||

contour_resid | Open a contour plot of data-minus-model residuals in ChIPS | |||

contour_source | Create a contour plot of the source | |||

contour | Open a contour plot in ChIPS | |||

get_ratio | Return information on the ratio of data and model. | |||

get_resid | Return information on a contour plot of the residuals of data and model. | |||

histogram1d | Create a 1D histogram from a binned grid and array of samples | |||

histogram2d | Create a 2D histogram from a pair of axes and a pair of sample arrays | |||

image_close | Close the imager window (i.e., exit ds9). | |||

image_data | Send image of 2-D data to ds9. | |||

image_deleteframes | Delete frames in the imager window (ds9). | |||

image_fit | Send image of the fit results to ds9. | |||

image_getregion | Returns a region description from ds9. | |||

image_open | Open the imager window (i.e., start ds9). | |||

image_ratio | Send image of the ratio (i.e., data/model) to ds9. | |||

image_resid | Send image of the residuals (i.e., data - model) to ds9. | |||

image_setregion | Sends a region description to ds9, where it is drawn in the current frame. | |||

image_xpaget | Retrieve data from ds9 using XPA. | |||

image_xpaset | Send data to ds9 using XPA. | |||

rebin | Rebin a histogram |