Hi Sachin
CK13N is a result of standard cost run.
When you do standard cost estimate through CK11N (followed by CK24) or through CK40N system calculates the prices for the BOM components according to the strategies defined in your valuation variant for material valuation and also it calculates activity cost according to strategies in valuation variant and also according to your version maintenance for this purpose.
In simple words I can say that system picks up material prices for BOM component from the material master of component and the cost of activities is calculated by multiplying the activity quantity in routing with the plan price maintained at KP26.
Looking to your screen shots I can say that the BOM contains only one item i.e. itself the header material (for which you are doing std cost), kindly re-check this. Also either no routing is maintained or no planned price for activities are maintained. So kindly check from this angle and again try to cost the material.
Regards
Rajneesh Saxena