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Changelog

This page is a changelog for releases of Fermipy. You can also browse releases on Github.

0.20.0 (08/24/2020)

  • Upgrade to P8R3_XXX_V3 irfs in testing
  • Added improvements to extension fitting and residual maps

0.19.0 (03/25/2020)

  • Switch installation procedure and to using fermitools-data for diffuse emission models
  • Update docs to reflect changers in intallation procedure
  • Added new version of 4FGL catalog
  • Updated automatic testing to work with 4FGL and new diffuse emisison models

0.18.1 (03/10/2020)

  • Changes to improve automated builds for testing
  • Added documentation for fermipy.jobs and femripy.diffuse modules
  • Some changes to support different size pixels in different components
  • Added gtpsf and gtdrm support to gtanalysis

0.18.0 (10/18/2019)

  • Added tools to use new version of energy dispersion from fermitools.
  • Changed travis testing and conda scripts to work with conda release of fermitools.

0.17.4 (3/13/2019)

  • Including 4FGL, interstellar emission model and isotropic templates files.
  • Changing catalog.py to use 4FGL catalog
  • Minor fixes to target_collect.py, lightcurve.py and gta.simulate()

0.17.3 (7/12/2018)

  • Added fitting code to fermipy.diffuse module
  • Improved fermipy.jobs to deal with analyses with multiple components
  • Added capability to plot global minimum in castro plots
  • Added spectra for dark matter decay to DMFitFunction
  • Added code to split simulations into smaller batch jobs
  • Added fixed shape lightcurve to correct TS_var computation

0.17.2 (5/30/2018)

  • Added lots of documentation for the fermipy.jobs module.
  • Minor changes to the fermipy.jobs module to work with the dark matter analysis pipeline (dmpipe).

0.17.1 (5/23/2018)

  • Patch release to get versioning working with GitHub release system.

0.17.0 (5/22/2018)

  • The LogParabola, PowerLawSuperExponetial and Dark Matter SEDs have been added to the sensitivity.py script.
  • There are a lot of additions to perform a stacking analysis. This can be applied for instance for the search of dark matter with a stacking analysis of Milky Way dSphs, Galaxy Clusters or other galaxies.
  • It contains scripts to send jobs to SLAC Batch Farm and collect the results.
  • It includes scripts and functions to perform all sky fits.
  • It also fixes a few issues with glon and glat in the localization (#225), and the wrong orientation of residual and TS maps (#216)

0.16.0 (12/27/2017)

  • Improvements and refactoring in the internals of the lightcurve method (see #156, #157, #160, #161, #162). Resolve fit stability issues that were arising when the source of interest was not significantly detected in a given time bin. Added options to speed up source map calculation by rescaling source maps (enabled with use_scaled_srcmap=True) and split the lightcurve calculation across N cores (enabled with multithread=True and nthread=N). Add calculation of TS_var to test for variability using method from the 2FGL.
  • Updates to validation tools. Added MeritSkimmer script (fermipy-merit-skimmer) for skimming ROOT merit tuples either locally or on xrootd.

0.15.0 (09/05/2017)

  • Bug fix related to restoring analysis state for phased analysis (scaled exposure).
  • Many improvements and feature additions to senstivity tools (see e.g. #148, #149, and #152).
  • Various updates to support DM pipeline package (#146).
  • Improve robustness of algorithms for extracting peak and uncertainty ellipse from 2D likelihood surface.
  • Added ~fermipy.gtanalysis.GTAnalysis.curvature method for testing a source for spectral curvature.
  • Added fix_shape option to ~fermipy.gtanalysis.GTAnalysis.extension and ~fermipy.gtanalysis.GTAnalysis.localize to fix spectral shape parameters. Spectral shape parameters of the source of interest are now free by default when localizing or fitting extension.

0.14.0 (03/28/2017)

  • Refactoring and improvements in ~fermipy.gtanalysis.GTAnalysis.localize and ~fermipy.gtanalysis.GTAnalysis.extension (see #124). Cleanup of columns in ~fermipy.gtanalysis.GTAnalysis.localize. Add new columns for 1-sigma errors projected in CEL and GAL coordinates as well as associated covariance and correlation matrices. Add positional errors when running ~fermipy.gtanalysis.GTAnalysis.extension with fit_position=True.
  • Add free_radius option to ~fermipy.gtanalysis.GTAnalysis.localize, ~fermipy.gtanalysis.GTAnalysis.extension, and ~fermipy.gtanalysis.GTAnalysis.sed. This can be used to free background sources within a certain distance of the analyzed source.
  • Relocalize point-source hypothesis when testing extension of extended sources.
  • Improve speed and accuracy of source map calculation (see #123). Exposures are now extracted directly from the exposure map.
  • Write analysis configuration to CONFIG header keyword of all FITS output files.
  • Add jobs and diffuse submodules (see #120 and #122). These contain functionality for peforming all-sky diffuse analysis and setting up automated analysis pipelines. More detailed documentation on these features to be provided in a future release.

0.13.0 (01/16/2017)

  • Rewrite LTCube class to add support for fast LT cube generation. The gtlike.use_local_ltcube option can be used to enable the python-based LT cube calculation in lieu of gtltcube.
  • Bug fixes and improvements to lightcurve method (see #102). Python-based LT cube generation is now enabled by default resulting in much faster execution time when generating light curves over long time spans.
  • Add fit_position option to ~fermipy.gtanalysis.GTAnalysis.extension that can be used to enable a joint fit of extension and position.
  • New scheme for auto-generating parameter docstrings.
  • Add new ~fermipy.gtanalysis.GTAnalysis.set_source_morphology method to update the spatial model of a source at runtime.
  • Major refactoring of ~fermipy.gtanalysis.GTAnalysis.extension and ~fermipy.gtanalysis.GTAnalysis.localize (see #106 and #110).
  • Pulled in many new modules and scripts for diffuse all-sky analysis (see #105).

0.12.0 (11/20/2016)

  • Add support for phased analysis (#87). gtlike.expscale and gtlike.src_expscale can be used to apply a constant exposure correction to a whole component or individual sources within a component. See phased for examples.
  • Add script and tools for calculating flux sensitivity (#88 and #95). The fermipy-flux-sensitivity script evaluates both the differential and integral flux sensitivity for a given TS threshold and minimum number of detected counts. See sensitivity for examples.
  • Add fermipy-healview script for generating images of healpix maps and cubes.
  • Improvements to HPX-related classes and utilities.
  • Refactoring in irfs module to support development of new validation tools.
  • Improvements to configuration handling to allow parameter validation when updating configuration at runtime.
  • Add lightcurve method (#80). See lightcurve for documentation.
  • Change convention for flux arrays in source object. Values and uncertainties are now stored in separate arrays (e.g. flux and flux_err).
  • Add Docker-based installation <dockerinstall> instructions. This can be used to run the RHEL6 SLAC ST builds on any machine that supports Docker (e.g. OSX Yosemite or later).
  • Adopt changes to column name conventions in SED format. All column names are now lowercase.

0.11.0 (08/24/2016)

  • Add support for weighted likelihood fits (supported in ST 11-03-00 or later). Weights maps can be specified with the wmap parameter in config_gtlike.
  • Implemented performance improvements in ~fermipy.gtanalysis.GTAnalysis.tsmap including switching to newton's method for step-size calculation and masking of empty pixels (see #79).
  • Ongoing development and refactoring of classes for dealing with CastroData (binned likelihood profiles).
  • Added ~fermipy.gtanalysis.GTAnalysis.reload_sources method for faster recomputation of source maps.
  • Fixed sign error in localization plotting method that gave wrong orientation for error ellipse..
  • Refactored classes in ~fermipy.spectrum and simplified interface for doing spectral fits (see #69).
  • Added DMFitFunction spectral model class in ~fermipy.spectrum (see #66). This uses the same lookup tables as the ST DMFitFunction class but provides a pure python implementation which can be used independently of the STs.

0.10.0 (07/03/2016)

  • Implement support for more spectral models (DMFitFunction, EblAtten, FileFunction, Gaussian).
  • New options (outdir_regex and workdir regex) for fine-grained control over input/output file staging.
  • Add offset_roi_edge to source dictionary. Defined as the distance from the source position to the edge of the ROI (< 0 = inside the ROI, > 0 = outside the ROI).
  • Add new variables in ~fermipy.gtanalysis.GTAnalysis.fit output (edm, fit_status).
  • Add new package scripts (fermipy-collect-sources, fermipy-cluster-sources).
  • Various refactoring and improvements in code for dealing with castro data.
  • Add MODEL_FLUX and PARAMS HDUs to SED FITS file. Many new elements added SED output dictionary.
  • Support NEWTON fitter with the same interface as MINUIT and NEWMINUIT. Running ~fermipy.gtanalysis.GTAnalysis.fit with optimizer = NEWTON will use the NEWTON fitter where applicable (only free norms) and MINUIT otherwise. The optimizer argument to ~fermipy.gtanalysis.GTAnalysis.sed, ~fermipy.gtanalysis.GTAnalysis.extension, and ~fermipy.gtanalysis.GTAnalysis.localize can be used to override the default optimizer at runtime. Note that the NEWTON fitter is only supported by ST releases after 11-01-01.

0.9.0 (05/25/2016)

  • Bug fixes and various refactoring in TSCube and CastroData. Classes for reading and manipulating bin-by-bin likelihoods are now moved to the ~fermipy.castro module.
  • Rationalized naming conventions for energy-related variables. Properties and method arguments with units of the logarithm of the energy now consistently contain log in the name.
    • ~fermipy.gtanalysis.GTAnalysis.energies now returns bin energies in MeV (previously it returned logarithmic energies). ~fermipy.gtanalysis.GTAnalysis.log_energies can be used to access logarithmic bin energies.
    • Changed erange parameter to loge_bounds in the methods that accept an energy range.
    • Changed the units of emin, ectr, and emax in the sed output dictionary to MeV.
  • Add more columns to the FITS source catalog file generated by ~fermipy.gtanalysis.GTAnalysis.write_roi. All float and string values in the source dictionary are now automatically included in the FITS file. Parameter values, errors, and names are written to the param_values, param_errors, and param_names vector columns.
  • Add package script for dispatching batch jobs to LSF (fermipy-dispatch).
  • Fixed some bugs related to handling of unicode strings.

0.8.0 (05/18/2016)

  • Added new variables to source dictionary:
    • Likelihood scan of source normalization (dloglike_scan, eflux_scan, flux_scan).
    • Source localization errors (pos_sigma, pos_sigma_semimajor, pos_sigma_semiminor, pos_r68, pos_r95, pos_r99, pos_angle). These are automatically filled when running ~fermipy.gtanalysis.GTAnalysis.localize or ~fermipy.gtanalysis.GTAnalysis.find_sources.
  • Removed camel-case in some source variable names.
  • Add cacheft1 option to config_data disable caching FT1 files. Cacheing is still enabled by default.
  • Support FITS file format for preliminary releases of the 4FGL catalog.
  • Add __future__ statements throughout to ensure forward-compatibility with python3.
  • Reorganize utility modules including those for manipulation of WCS and healpix images.
  • Various improvements and refactoring in ~fermipy.gtanalysis.GTAnalysis.localize. This method now moved to the ~fermipy.sourcefind module.
  • Add new global parameter llscan_pts in config_gtlike to define the number of likelihood evaluation points.
  • Write output of ~fermipy.gtanalysis.GTAnalysis.sed to a FITS file in the Likelihood SED format. More information about the Likelihood SED format is available on this page.
  • Write ROI model to a FITS file when calling ~fermipy.gtanalysis.GTAnalysis.write_roi. This file contains a BINTABLE with one row per source and uses the same column names as the 3FGL catalog file to describe spectral parameterizations. Note that this file currently only contains a subset of the information available in the numpy output file.
  • Reorganize classes and methods in ~fermipy.sed for manipulating and fitting bin-by-bin likelihoods. Spectral functions moved to a dedicated ~fermipy.spectrum module.
  • Write return dictionary to a numpy file in ~fermipy.gtanalysis.GTAnalysis.residmap and ~fermipy.gtanalysis.GTAnalysis.tsmap.