open( O, ">", "file_path/CQA_STATUS" ) or die "CQA_STATUS: $!";

for my $file ( <file_path/cqa_*> )
{
    open( I, "<", $file ) or do { warn "$file: $!"; next };

    while (<I>) { # suppose we only want the first occurrence from each file
        if ( /^CQA_STATUS/ ) {
            print O;
            last;
        }
    }
    close I;
}
close O;