Spectral energy distributions and 1er uncertainty bands of fitted power-law models for LS 5039 for the INFC (solid lines and filled area) and the SUPC (dashed lines and hatched area). The left panel compares the ctools and GammaLib results (red) to the results obtained by Collmar & Zhang (2014) for an identical event selection (blue). The right panel compares the ctools and GammaLib results (red) to the results obtained using the COMPASS software by excluding D2 modules with faulty PMTs (blue). Data points from Collmar & Zhang (2014) and derived using COMPASS were displaced by 3% in energy for clarity.