Create custom widget area under header

I am trying to show some dynamic content beside my header.
For this, i have created the below hooks. But i could not get them working.

function wpsites_register_header_widget() {

register_sidebar( array(
'name' => 'Header Widget',
'id' => 'header-widget',
'before_widget' => '<div>',
'after_widget' => '</div>',
) );
}

add_action( 'widgets_init', 'wpsites_register_header_widget' );

add_filter( 'cryout_header_hook', 'wpsites_header_widget' );

function wpsites_header_widget() {
if ( is_active_sidebar( 'header-widget' ) ) {
dynamic_sidebar('header-widget', array(
'before' => '<div class="header-widget">',
'after' => '</div>',
) );
    }
}

Do i need to create a widget in the admin panel, for this to work? Please suggest.