Your question(s) is a little unclear, as "know the validity" could mean the period of time they are valid, whether your statement about them is valid or something else. Further, you don't specifically say but it seems you are discussing the Hyatt personal and not business CC, The best place to look for award accrual information from stays is on the Hyatt websites. As for the credit card, you get one Cat1-4 night for each $15K spend increment in a calendar year, then you also get a Cat 1-4 certificate after renewing the card for another year and paying the cc fee. Other stay certificates come from accumulating stays at Hyatt or SLH hotels. Many details and terms/conditions of the various awards are found when you log into Hyatt and go to the above link.

Finally, your last question discusses Cat1-7 award from credit card. I do not believe there is any Cat1-7 award from any credit card activity, only Cat 1-4.