//code for ng-table in html
<ng-table (tableChanged)="onChangeTable(config)"
(cellClicked)="onCellClick($event)"
[rows]="rows" [columns]="columns">
</ng-table>

//to create checkbox I am adding html in component where filling the data.
data.forEach((item: any) =>
{item.CheckBox = '<input type="checkbox"></input>';

//cell click event in table component is getting triggered
public onCellClick(data: any): any {
     this event is getting triggered
     ....
}