  Never before has the detection and characterization of exoplanets via transit
photometry been as promising and feasible as it is now, due to the increasing
breadth and sensitivity of time domain optical surveys. Past works have made
use of phase-folded stellar lightcurves in order to study the properties of
exoplanet transits, because this provides the highest signal that a transit is
present at a given period and ephemeris. Characterizing transits on an
individual, rather than phase-folded, basis is much more challenging due to the
often low signal-to-noise ratio (SNR) of lightcurves, missing data, and low
sampling rates. However, by phase-folding a lightcurve we implicitly assume
that all transits have the same expected properties, and lose all information
about the nature and variability of the transits. We miss the natural
variability in transit shapes, or even the deliberate or inadvertent
modification of transit signals by an extraterrestrial civilization (for
example, via laser emission or orbiting megastructures). In this work, we
develop an algorithm to search stellar lightcurves for individual anomalous (in
timing or depth) transits, and we report the results of that search for 218
confirmed transiting exoplanet systems from Kepler.
