Rejection ASTRO: My guess is that a radio is attempting to make an ASTRO call on a talk group that is not deinfed as ASTRO in the central controller, or a radio is trying to use an analog individual ID for an ASTRO call.
Earlier Req to AFF had no reply: In SmartZone, the system will poll each radio every couple of hours to make sure that it is still around and that the talk group that the radio is "bringing up" on the site still needs to be brought up. If the radio does not reply with the affiliation request, the talk group will be torn down and not broadcast on the site. If the affiliation request is acknowledged, the talk group will continue to be broadcast. The message shown here is indicating that an eariler affiliation request that was sent to this radio had no reply.
System Req for RID to Affiliate: See above - this is the system requesting the radio to affiliate.
Send Affiliation Request: My guess here is that a standalone terminal (e.g. Site Lens, SystemWatch, etc.) has been manipulated to send a radio check to a radio. This command could be that statndalone terminal telling the central controller to send a system request for a radio ID to affiliate. You probably saw the "System Req for RID to Affiliate" command sent shortly after this command.
Interconnect termination: This is simply stating that a telephone interconnect call has ended.
Disabled Function: Could be a bunch of things: Radio not enabled to make a systemwide call attempting a systemwide call, same for a private call or call alert, etc. I couldn't venture to guess which one this might be, but in general - it was a radio attempting to perform a function that had not been enabled for that radio on the system.
Group Call to Busy Group: This is a simple busy call - there wasn't a trunking repeater available on the system when the call was placed, so the user was placed into the busy queue until a trunked repeater was available.
There are a few others, but I can't get them verbatim because I wasn't logging the system.
You may want to check some of Treport's documentation, I think that some/most of these are defined in it. Good luck!