diff --git a/src/ctapipe/tools/display_dl1.py b/src/ctapipe/tools/display_dl1.py
index 95a84ea87c5..01e4804e824 100644
--- a/src/ctapipe/tools/display_dl1.py
+++ b/src/ctapipe/tools/display_dl1.py
@@ -71,7 +71,7 @@ def _init_figure(self):
         except ModuleNotFoundError:
             raise OptionalDependencyMissing("matplotlib") from None
 
-        self.fig = plt.figure(figsize=(16, 7))
+        self.fig = plt.figure(figsize=(16, 7), layout="constrained")
         self.ax_intensity = self.fig.add_subplot(1, 2, 1)
         self.ax_peak_time = self.fig.add_subplot(1, 2, 2)
         if self.output_path:
@@ -92,13 +92,21 @@ def plot(self, event, tel_id):
 
             # Redraw camera
             geom = self.subarray.tel[tel_id].camera.geometry
-            self.c_intensity = CameraDisplay(geom, ax=self.ax_intensity)
+            image_cmap = copy(plt.get_cmap("inferno"))
+            image_cmap.set_bad("gray")
+            self.c_intensity = CameraDisplay(
+                geom, ax=self.ax_intensity, cmap=image_cmap
+            )
 
             time_cmap = copy(plt.get_cmap("RdBu_r"))
             time_cmap.set_under("gray")
             time_cmap.set_over("gray")
+            time_cmap.set_bad("gray")
             self.c_peak_time = CameraDisplay(geom, ax=self.ax_peak_time, cmap=time_cmap)
 
+            for d in (self.c_intensity, self.c_peak_time):
+                d.pixels.set_rasterized(True)
+
             if not self.cb_intensity:
                 self.c_intensity.add_colorbar(
                     ax=self.ax_intensity, label="Intensity (p.e.)"
@@ -124,7 +132,7 @@ def plot(self, event, tel_id):
         self.c_peak_time.set_limits_minmax(t_chargemax - 5, t_chargemax + 5)
 
         self.fig.suptitle(
-            "Event_index={}  Event_id={}  Telescope={}".format(
+            "event_index={}  event_id={}  tel_id={}".format(
                 event.count, event.index.event_id, tel_id
             )
         )
@@ -133,7 +141,7 @@ def plot(self, event, tel_id):
             plt.pause(0.001)
 
         if self.pdf is not None:
-            self.pdf.savefig(self.fig)
+            self.pdf.savefig(self.fig, dpi=200)
 
     def __enter__(self):
         self._exit_stack.__enter__()