How to disable systemd debug messages?

Issue

• While accessing systemd commands remotely, systemd flooding terminal with debug messages?
• Error,

[rupesh@shreeji ~]$ ssh rupesh@192.65.10.17 '/bin/systemctl get-default'
Sent message type=method_call sender=n/a destination=org.freedesktop.DBus object=/org/freedesktop/DBus interface=org.freedesktop.DBus member=Hello cookie=1 reply_cookie=0 error=n/a
Got message type=method_return sender=org.freedesktop.DBus destination=:1.23 object=n/a interface=n/a member=n/a cookie=1 reply_cookie=1 error=n/a
Sent message type=method_call sender=n/a destination=org.freedesktop.systemd1 object=/org/freedesktop/systemd1 interface=org.freedesktop.systemd1.Manager member=GetDefaultTarget cookie=2 reply_cookie=0 error=n/a
multi-user.target
[rupesh@shreeji ~]$