  In high-energy heavy-ion collisions, structures in the initial collision zone
are a matter of intense investigation, both from theory and experimental points
of view. A large number of models have been developed to represent the initial
state of the collision including Glauber model, Colour Glass Condensate (CGC)
among others. Another important aspect of the study is to investigate proper
observables that will be sensitive to the initial collision zone. In this work,
we have discussed a formalism to implement the spatial clusters at the partonic
level in the string melting version of the AMPT model for PbPb collisions at
$\sqrt{s_{NN}}$ = 200 GeV. These clusters are then propagated through the AMPT
hadronization scheme. The Principal Component Analysis (PCA) has been used on
the $\eta$, $\phi$ and $p_T$ distributions of the produced charged particles
and the eigenvalues have been compared before and after the implementation of
the clustering. It is found that for all these three different distributions,
all the prominent PCA modes have shown sensitivity to the clustering. A
centrality dependent study has also been performed on those eigenvalues.

Nuclear Theory;High Energy Physics - Phenomenology