Changed backend config to dev environment. Added description of list value metadata query

README.md

@@ -171,14 +171,11 @@ filter = {
 }
 ```
 
-3) Timestamp equality and ranges
+3) List of values
+The queried data should match one of the values in the list. String or number values are possible.
 ```python
 filter = {
-    "created_date": "2015-08-04T11:00:00",
-    "obs_date": {
-        "gt": "2015-06-01T10:00:00",
-        "lt": "2015-07-01T10:00:00",
-    },
+    "NAXIS": [0, 1]
 }
 ```
 

csst_fs/s3_config.py

@@ -11,7 +11,7 @@ default_s3_settings = {
 }
 
 default_backend_settings = {
-    'backend_url': 'http://10.200.60.199:32000',
+    'backend_url': 'https://astro-workbench-bts.lab.zverse.space:32443/api/csst',
 }
 
 def load_from_env():