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With each new version of the Kepler pipeline and resulting planet candidatecatalogue, an updated measurement of the underlying planet population can onlybe recovered with an corresponding measurement of the Kepler pipeline detectionefficiency. Here, we present measurements of the sensitivity of the pipeline(version 9.2) used to generate the Q1-Q17 DR24 planet candidate catalog(Coughlin et al. 2016). We measure this by injecting simulated transitingplanets into the pixel-level data of 159,013 targets across the entire Keplerfocal plane, and examining the recovery rate. Unlike previous versions of theKepler pipeline, we find a strong period dependence in the measured detectionefficiency, with longer (>40 day) periods having a significantly lowerdetectability than shorter periods, introduced in part by an incorrectlyimplemented veto. Consequently, the sensitivity of the 9.2 pipeline cannot becast as a simple one-dimensional function of the signal strength of thecandidate planet signal as was possible for previous versions of the pipeline.We report on the implications for occurrence rate calculations based on theQ1-Q17 DR24 planet candidate catalog and offer important caveats andrecommendations for performing such calculations. As before, we make availablethe entire table of injected planet parameters and whether they were recoveredby the pipeline, enabling readers to derive the pipeline detection sensitivityin the planet and/or stellar parameter space of their choice.

astrophysical journal/the astrophysical journal

Measuring Transit Signal Recovery in the Kepler Pipeline. III.  Completeness of the Q1-Q17 DR24 Planet Candidate Catalogue, with Important  Caveats for Occurrence Rate Calculations