To inspect a systemd service, you need some handy commands.
Examine service names
First you have to get the correct service name you want to inspect.
systemctl list-units --type=service
You can use grep to filter the list.
Gather information of service
You can show the current status of a service with:
systemctl status servicename
Then you can display all options that describe the service:
systemctl show servicename
And you can show all files which belongs to the service description:
systemctl cat servicename