How to check Logstash logs appearing in Elasticsearch?

Okay I am a noob
I have ELK installed in Docker containers and am sending logs from a Python program using python-logstash. I can see Logstash receiving my logs when I do docker-compose logs .

How do I check these are appearing in Elasticsearch , later Kibana?

Do I need a filter?

You can query the elastic API using curl depending on the output of your filebeat conf ( index name )

You dont specially need logstash or kibana to view or work with documents ingested in elastic db

Ahh okay. You mean like these?