  Considering a non-centrosymmetric, non-magnetic double Weyl semimetal (WSM)
SrSi$_2$, we investigate the electron and hole pockets in bulk Fermi surface
behavior that enables us to characterize the material as a type-I WSM. We study
the structural handedness of the material and correlate it with the distinct
surface Fermi surface at two opposite surfaces following an energy evolution.
The Fermi arc singlet becomes doublet with the onset of spin orbit coupling
that is in accordance with the topological charge of the Weyl Nodes (WNs). A
finite energy separation between WNs of opposite chirality in SrSi$_2$ allows
us to 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 WN residing at higher value of energy. Surprisingly, for the other
WN of opposite chirality in the lower value of 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 WN. 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.
