[{_id:1,members:["1","3","5"],status:"active"},{_id:2,members:["4","1","10","11"],status:"inactive"},{_id:3,members:["1","9"],status:"active"}]

db.collection.aggregate([{$unwind:"$members"},{$project:{_id:0}},{"$group":{"_id":"$status",members:{$addToSet:"$members"}}}])