  We have studied the persistence probability $p(t)$ of an active Brownian
particle with shape asymmetry in two dimensions. The persistence probability is
defined as the the probability of a stochastic variable that has not changed
it's sign in the fixed given time interval. We have investigated two cases:
diffusion of a free active particle and that of harmonically trapped particle.
In our earlier work, \emph{Ghosh et. al.}, Journal of Chemical Physics,
\textbf{152},174901, (2020), we had shown that $p(t)$ can be used to determine
translational and the rotational diffusion constant of an asymmetric shape
particle. The method has the advantage that the measurement of the rotational
motion of the an-isotropic particle is not required. In this paper, we extend
the study to an active an-isotropic particle and show how the persistence
probability of an an-isotropic particle is modified in the presence of a
propulsion velocity. Further, we validate our analytical expression against the
measured persistence probability from the numerical simulations of single
particle Langevin dynamics and test whether the method proposed in our earlier
work can distinguish between an active and a passive an-isotropic particle.
