try to capture bad error code

scripts/cal_update_restart

@@ -34,7 +34,15 @@ git pull
 # pull	in the latest filter file from the archive
 cd ~dmtexec/calibration/
 filter_file=gstlal_compute_strain_C00_filters_${IFO}.npz
-curl --remote-name https://ldas-jobs.ligo-${site}.caltech.edu/~cal/archive/${IFO}/reports/latest/${filter_file}
+return_code=$(curl \
+		  --write-out "%{http_code}" \
+		  --remote-name \
+		  https://ldas-jobs.ligo-${site}.caltech.edu/~cal/archive/${IFO}/reports/latest/${filter_file}
+	   )
+if [[ "$return_code" != 200 ]] ; then
+    echo "filter download did not return 200 status: $return_code"
+    exit 1
+fi
 sha256sum ${filter_file}
 
 # restart the pipeline