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Update ctapipe-display-dl1 to show bad pixels (nan) in gray #3047

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Update ctapipe-display-dl1 to show bad pixels (nan) in gray #3047

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3d4eae4
Highlight bad pixels in gray in display-dl1
maxnoe Jun 24, 2026
7eb3a26
Rasterize pixel output for smaller PDFs in display-dl1
maxnoe Jun 24, 2026
61a6f02
Add tight layout and dpi
maxnoe Jun 24, 2026
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16 changes: 12 additions & 4 deletions src/ctapipe/tools/display_dl1.py
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Original file line number Diff line number Diff line change
Expand Up @@ -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:
Expand All @@ -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.)"
Expand All @@ -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
)
)
Expand All @@ -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__()
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