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Fermi Light Curve Repository Data Description |
Date: | Mid point of time bin in UTC. |
Julian date: | Mid point of time bin in JD. |
MET: | Mid point of time bin in Mission Elapsed Time (MET). |
TS: | The likelihood Test Statistic. |
Photon Flux: | Average integrated photon flux with energies from 0.1 to 100 GeV. Units in photons/cm^2/s. |
Photon Flux Error: | 1-sigma symmetric gaussian equivalent statistical uncertainty based on the inverse-Hessian at the optimum of the log-likelihood surface. Units in photons/cm^2/s. |
Energy Flux: | Average integrated energy flux with energies from 0.1 to 100 GeV. Units in MeV/cm^2/s. |
Energy Flux Error: | 1-sigma symmetric gaussian equivalent statistical uncertainty based on the inverse-Hessian at the optimum of the log-likelihood surface. Units in MeV/cm^2/s. |
Photon Index: | Average photon index, if the spectral model for the source in the FGL catalog used by the LCR is a power-law. Average alpha, if the spectral model for the source in the FGL catalog used by the LCR is a logparabola. |
Photon Index Error: | 1-sigma symmetric gaussian equivalent photon index error |
Fit Tolerance: | Relative fit tolerance. |
MINUIT Return Code: | Anything other than '0' means that the analysis did not converge. Please read the caveats about non-convergent analyses. |
Analysis Log: | Complete LAT analysis runtime output of data within the time invertal of the bin. |
ts: | The likelihood Test Statistic. |
flux: | Average integrated flux of photons with energies from 0.1 to 100 MeV. Units in photons/cm^2/s if photon flux is selected, MeV/cm^2/s if energy flux is selected. |
flux_upper_limits: | 95% Flux upper limits in photons/cm^2/s. |
flux_error: | 1-sigma symmetric gaussian equivalent statistical uncertainty in photons/cm^2/s if photon flux is selected, MeV/cm^2/s if energy flux is selected. |
photon_index: | Photon index if source spectral shape is power-law, alpha if it is logparabola. |
photon_index_error: | 1-sigma symmetric gaussian equivalent photon index/alpha statistical uncertainty. |
fit_tolerance: | Relative fit tolerance. |
fit_convergence: | MINUIT return code. Anything other than '0' means that the analysis did not converge. Please read the caveats about non-convergent analyses. |
dlogl: | Delta log-likelihood between a fixed index and free index fit. |
EG: | Isotropic diffuse background Normalization. |
GAL: | Galactic diffuse background Prefactor. |
bin_id: | Time bin number. |