  Based on the quantum molecular dynamics (QMD) picture, we aim to understand
heavy-ion collisions in terms of participant spectator matter leading to
various fragments of different sizes. The study is performed for symmetric as
well as asymmetric reaction at E = 200 MeV/nucleon for central collisions. Our
results highlight the importance of fragmentation criterion in terms of light
mass fargments which are a part of participant matter and intermediate mass
fragments which are coming from the spectator region.
