diff --git a/control/src/mercury/carrier/Carrier.py b/control/src/mercury/carrier/Carrier.py
index 6d1adab..4ea673b 100644
--- a/control/src/mercury/carrier/Carrier.py
+++ b/control/src/mercury/carrier/Carrier.py
@@ -1084,6 +1084,7 @@ def create_reshaped_array():
 
             self._segment_data = self._segment_data + reshaped
 
+        blank_segment = [[0] * 80]*4
 
         try:
 
@@ -1093,7 +1094,11 @@ def create_reshaped_array():
                 for segment in range(20):
                     create_reshaped_array()
             else:
+                for i in range(0, segment):
+                    self._segment_data = self._segment_data + blank_segment
                 create_reshaped_array()
+                for i in range (segment+1, 20):
+                    self._segment_data = self._segment_data + blank_segment
                     
 
             self._segment_ready = True
diff --git a/control/test/static/js/carrier.js b/control/test/static/js/carrier.js
index 4abb3be..ab7628a 100644
--- a/control/test/static/js/carrier.js
+++ b/control/test/static/js/carrier.js
@@ -1258,6 +1258,7 @@ function update_loki_asic_segment_data() {
 
 function readout_output(segment_data) {
 
+    var first_row = segment_current*4;
     
     var data = [
         {
@@ -1306,6 +1307,9 @@ function readout_output(segment_data) {
     if (all_segments_displayed) {
         layout["title"] = 'All Segments';
         layout.coloraxis["colorbar"] = "v";
+    } else {
+        layout.yaxis.autorange=false;
+        layout.yaxis.range=[first_row+3.5,first_row-0.5];
     };
     
     Plotly.newPlot('graph_output', data, layout, config);