You can use Report Design Analysis in Complexity Mode to evaluate connectivity and fanout at the top level of the design and its immediate hierarchy.
To generate a complexity report that includes the top module and one level below it, run the following Tcl command option:
report_design_analysis -complexity -hierarchical_depth 1Figure 1. Complexity Analysis at the Top Level and Hierarchical Depth of 1
Note: To simplify report navigation, right-click any column
header to enable column filtering. You can apply multiple filters to reduce the report size,
especially when a large number of hierarchies are present.