  Based on the isospin-dependent quantum molecular dynamics (IQMD) model, we
aim to understand the effect of target fragmentation on various quantities i.e.
collision rate, fragments multiplicity etc by simulating the collision between
$Au^{197}$ projectile and $C^{12}$, $Al^{26}$, $Cu^{63}$, and $Pb^{208}$ as
targets at incident energy 600 MeV/nucleon. The collision geometry is varied
from central to peripheral. Our results indicate the rise and fall in the
production of intermediate mass fragments with ${Z_{bound}}$ which is in
agreement with the experimental data of Aladin collaboration at lower impact
parameters, while, some deviation is seen at higher impact parameters.
