  Considering a non-centrosymmetric, non-magnetic double Weyl semimetal (WSM)
SrSi$_2$, we study the structural handedness of the material and correlate it
with the distinct surface Fermi surface profile at two opposite surfaces. By
investigating the electron and hole pockets in bulk Fermi surface behavior, we
characterize the material as a type-I WSM. A finite energy separation between
Weyl nodes of opposite chirality in SrSi$_2$ allows us compute circular
photogalvanic effect (CPGE). Followed by the three band formula, we show that
CPGE is only quantized for Fermi level chosen in the vicinity of Weyl node
having higher energy. Surprisingly, for the other Weyl node of opposite
chirality in the lower energy, CPGE is not found to be quantized. Such a
behavior of CPGE is in complete contrast to the time reversal breaking WSM
where CPGE is quantized to two opposite plateau depending on the topological
charge of the activated Weyl node. We further analyze our finding by examining
the momentum resolved CPGE. Finally we show that two band formula for CPGE is
not able to capture the quantization that is apprehended by the three band
formula.
