diff --git a/tests/hit/configs/aggregations-hit-config.json b/tests/hit/configs/aggregations-hit-config.json
new file mode 100644
index 000000000..db5f5380d
--- /dev/null
+++ b/tests/hit/configs/aggregations-hit-config.json
@@ -0,0 +1,34 @@
+{
+    "outputs": [
+      "is_valid_rt",
+      "is_valid_t0",
+      "is_valid_tmax",
+      "aggr1",
+      "aggr2"
+    ],
+    "operations": {
+      "is_valid_rt": {
+        "expression": "((tp_90-tp_10)>96) & ((tp_50-tp_10)>=16)",
+        "parameters": {}
+      },
+      "is_valid_t0": {
+        "expression": "(tp_0_est>47000) & (tp_0_est<55000)",
+        "parameters": {}
+      },
+      "is_valid_tmax": {
+        "expression": "(tp_max>47000) & (tp_max<120000)",
+        "parameters": {}
+      }
+    },
+    "aggregations": {
+        "aggr1":  {
+            "bit0": "is_valid_rt",
+            "bit1": "is_valid_t0",
+            "bit2": "is_valid_tmax"
+        },
+        "aggr2":  {
+            "bit0": "is_valid_t0",
+            "bit1": "is_valid_tmax"
+        }
+    }
+  }
\ No newline at end of file
diff --git a/tests/hit/test_build_hit.py b/tests/hit/test_build_hit.py
index e497a1742..0c7cf3cf4 100644
--- a/tests/hit/test_build_hit.py
+++ b/tests/hit/test_build_hit.py
@@ -96,7 +96,32 @@ def test_outputs_specification(dsp_test_file, tmptestdir):
     store = LH5Store()
     obj, _ = store.read_object("/geds/hit", outfile)
     assert list(obj.keys()) == ["calE", "AoE", "A_max"]
+    
+    
+def test_aggregation_outputs(dsp_test_file, tmptestdir):
+    outfile = f"{tmptestdir}/LDQTA_r117_20200110T105115Z_cal_geds_hit.lh5"
+
+    build_hit(
+        dsp_test_file,
+        outfile=outfile,
+        hit_config=f"{config_dir}/aggregations-hit-config.json",
+        wo_mode="overwrite",
+    )
 
+    sto = LH5Store()
+    obj, _ = sto.read_object("/geds/hit", outfile)
+    assert list(obj.keys()) == ["is_valid_rt", "is_valid_t0", "is_valid_tmax", "aggr1", "aggr2"]
+    
+    df = store.load_dfs(outfile, ["aggr1", "aggr2"], "geds/hit/")
+    
+    assert df["aggr1"].dtype == 'int'
+    assert df["aggr2"].dtype == 'int'
+    
+    # aggr1 consists of 3 bits --> max number can be 7, aggr2 consists of 2 bits so max numer can be 3
+    assert (df["aggr1"] > 7).any() == False
+    assert (df["aggr2"] > 3).any() == False
+    
+    
 
 def test_build_hit_spms_basic(dsp_test_file_spm, tmptestdir):
     out_file = f"{tmptestdir}/L200-comm-20211130-phy-spms_hit.lh5"