template1 being accessed

I'm currently using postgres 9.2.

As you can see below, my "template1" database was being accessed:

That server is a 4-day-old backup DB - does a gzip of pg_dump, excluding some tables; also 4-day old replication using WAL-archive with 345600s delay; also file-level copies (excl. PG DB)

Why was the template1 database being accessed and now it's not anymore?

Cheers

Lucas