This is a little bit difficult in Sitecatalyst. You can make a product report and do a breakdown for each product by "visitor analysis->visitor conversion->hour of day". The other way around is not possible as far as I know.
Datawarehouse would be a better solution if you have access to it. Just select Product, (Day), Hour of Day and the metrics you want.
It is also possible to do it in Adhoc.
Hope this helps.