diff --git a/src/mana_plugin_python.cc b/src/mana_plugin_python.cc
index d8ebbe2..4b985e5 100644
--- a/src/mana_plugin_python.cc
+++ b/src/mana_plugin_python.cc
@@ -21,7 +21,8 @@ struct Context
     py::module usercode;
     py::object userobject;
     py::object py_begin_run;
-    py::object py_event_data;
+    py::object py_process_event;
+    py::object py_process_system_event;
     py::object py_end_run;
     std::vector<std::vector<py::object>> eventBuffers;
 };
@@ -29,7 +30,7 @@ struct Context
 
 MANA_DEFINE_PLUGIN_INIT(init)
 {
-    log_set_level(LOG_DEBUG);
+    log_set_level(LOG_INFO);
     static Context g_ctx;
     auto ctx = &g_ctx;
     log_debug("init: ctx=%p", ctx);
@@ -39,21 +40,18 @@ MANA_DEFINE_PLUGIN_INIT(init)
     return ctx;
 }
 
-MANA_DEFINE_PLUGIN_SHUTDOWN(shutdown)
-{
-    (void)context;
-    log_debug("shutdown");
-}
+MANA_DEFINE_PLUGIN_SHUTDOWN(shutdown) { log_info("shutdown: ctx=%p", context); }
 
 MANA_DEFINE_PLUGIN_BEGIN_RUN(begin_run)
 {
-    log_debug("begin_run: context=%p, descriptor_json=%s", context, descriptor_json);
+    log_info("begin_run: ctx=%p", context);
     auto jRun = nlohmann::json::parse(descriptor_json);
     auto ctx = reinterpret_cast<Context *>(context);
     ctx->usercode.reload();
     // TODO: check if the retrieved attributes are callable
     ctx->py_begin_run = ctx->usercode.attr("begin_run");
-    ctx->py_event_data = ctx->usercode.attr("event_data");
+    ctx->py_process_event = ctx->usercode.attr("process_event");
+    ctx->py_process_system_event = ctx->usercode.attr("process_system_event");
     ctx->py_end_run = ctx->usercode.attr("end_run");
     ctx->py_begin_run(descriptor_json);
     ctx->eventBuffers.clear();
@@ -68,7 +66,7 @@ MANA_DEFINE_PLUGIN_BEGIN_RUN(begin_run)
 
 MANA_DEFINE_PLUGIN_END_RUN(end_run)
 {
-    log_debug("end: context=%p, descriptor_json=%s", context, descriptor_json);
+    log_info("end: ctx=%p", context);
     auto ctx = reinterpret_cast<Context *>(context);
     ctx->py_end_run(descriptor_json);
 }
@@ -77,6 +75,7 @@ MANA_DEFINE_PLUGIN_EVENT_DATA(process_event)
 {
     log_trace("event: ctx=%p, eventIndex=%d, arrayCount=%zu, totalBytes=%zu", context, eventIndex,
               arrayCount, totalBytes);
+
     auto ctx = reinterpret_cast<Context *>(context);
     auto &buffers = ctx->eventBuffers.at(eventIndex);
     assert(buffers.size() == arrayCount);
@@ -86,13 +85,15 @@ MANA_DEFINE_PLUGIN_EVENT_DATA(process_event)
         ctx->eventBuffers[eventIndex][ai] =
             py::memoryview::from_memory(arraySpan.data(), arraySpan.size() * sizeof(float));
     }
-    ctx->py_event_data(eventIndex, ctx->eventBuffers);
+    ctx->py_process_event(eventIndex, ctx->eventBuffers);
 }
 
 MANA_DEFINE_PLUGIN_SYSTEM_EVENT(process_system_event)
 {
-    log_trace("system_event: ctx=%p, size=%zu", context, size);
+    log_debug("system_event: ctx=%p, size=%zu", context, size);
     auto ctx = reinterpret_cast<Context *>(context);
+    auto view = py::memoryview::from_memory(data, size * sizeof(uint32_t));
+    ctx->py_process_system_event(view);
 }
 
 extern "C" MANA_C_SINK_PLUGIN()
diff --git a/src/mana_python_test_plugin.py b/src/mana_python_test_plugin.py
index 715f215..bfaa323 100644
--- a/src/mana_python_test_plugin.py
+++ b/src/mana_python_test_plugin.py
@@ -1,13 +1,16 @@
 
-import json
-import py_mana
+import sys
 
 def begin_run(runDescription: str):
-    print("begin_run")
+    print(f"python: begin_run - python version: {sys.version}")
 
 def end_run(runDescription: str):
-    print("end_run")
+    print(f"python: end_run")
 
-def event_data(eventIndex: int, dataArrays):
+def process_event(eventIndex: int, dataArrays):
     return
     print(f"event[{eventIndex}]: {dataArrays}")
+
+def process_system_event(data):
+    return
+    print(f"python: system_event: size={len(data)}")