diff --git a/csst_ms_sls2d.md b/csst_ms_sls2d.md
index a0f32560052c293a9f8815cc5683f3bba1a50c44..c6d3725cda0c09de92c59276ca2fa7cc31ec241f 100644
--- a/csst_ms_sls2d.md
+++ b/csst_ms_sls2d.md
@@ -70,6 +70,6 @@
 
 #### Header of `csst_ms_sls_qc1`
 
-| keyword | value   | comment                 | fallback_value | type | module               |
-| ------- | :------ | ----------------------- | -------------- | ---- | -------------------- |
-
+| keyword    | value   | comment                      | fallback_value | type | module               |
+| -------    | :------ | -----------------------      | -------------- | ---- | -------------------- |
+| QC1_STATUS | 0       | 0 for success, 1 for failure | 1              | i8   | csst_ms_sls_position |