Why we go to magistrate?
It depends on the country and what kind of magistrate. In the
US, a magistrate can refer to two different things. They can be a
civil magistrate. For small claims court, the civil magistrate acts
as the "judge." In civil court, the civil magistrate files the case
for the judge, if I'm not mistaken.
For criminal court, the magistrate is the one whom charges are
filed with. What happens next depends on the type of crime. If it
is a misdemeanor, the magistrate passes control to a prosecutor
(often an assistant district attorney). If it is a felony, the
magistrate passes control to the grand jury. The magistrate also
decides the bail and custody arrangements until a judge decides
otherwise.