diff --git a/common/src/tracer/mod.rs b/common/src/tracer/mod.rs
index fabf459a..c68e3a4c 100644
--- a/common/src/tracer/mod.rs
+++ b/common/src/tracer/mod.rs
@@ -59,13 +59,7 @@ macro_rules! init_tracer {
 #[macro_export]
 macro_rules! record_metadata_fields_to_span {
     ($metadata:expr, $span:expr) => {
-        $span.record(
-            "metadata_timestamp",
-            $metadata
-                .timestamp
-                .format(supermusr_common::TIMESTAMP_FORMAT)
-                .to_string(),
-        );
+        $span.record("metadata_timestamp", $metadata.timestamp.to_rfc3339());
         $span.record("metadata_frame_number", $metadata.frame_number);
         $span.record("metadata_period_number", $metadata.period_number);
         $span.record("metadata_veto_flags", $metadata.veto_flags);
diff --git a/digitiser-aggregator/src/main.rs b/digitiser-aggregator/src/main.rs
index 82c5d462..0097bfe9 100644
--- a/digitiser-aggregator/src/main.rs
+++ b/digitiser-aggregator/src/main.rs
@@ -20,6 +20,7 @@ use supermusr_common::{
         messages_received::{self, MessageKind},
         metric_names::{FAILURES, FRAMES_SENT, MESSAGES_PROCESSED, MESSAGES_RECEIVED},
     },
+    record_metadata_fields_to_span,
     spanned::{FindSpanMut, Spanned},
     tracer::{FutureRecordTracerExt, OptionalHeaderTracerExt, TracerEngine, TracerOptions},
     CommonKafkaOpts, DigitizerId,
@@ -158,7 +159,15 @@ async fn main() -> anyhow::Result<()> {
     }
 }
 
-#[tracing::instrument(skip_all, level = "trace")]
+#[tracing::instrument(skip_all, fields(
+    digitiser_id = tracing::field::Empty,
+    metadata_timestamp = tracing::field::Empty,
+    metadata_frame_number = tracing::field::Empty,
+    metadata_period_number = tracing::field::Empty,
+    metadata_veto_flags = tracing::field::Empty,
+    metadata_protons_per_pulse = tracing::field::Empty,
+    metadata_running = tracing::field::Empty,
+))]
 async fn on_message(
     use_otel: bool,
     kafka_producer_thread_set: &mut JoinSet<()>,
@@ -180,6 +189,9 @@ async fn on_message(
                     let metadata_result: Result<FrameMetadata, _> = msg.metadata().try_into();
                     match metadata_result {
                         Ok(metadata) => {
+                            tracing::Span::current().record("digitiser_id", msg.digitizer_id());
+                            record_metadata_fields_to_span!(&metadata, tracing::Span::current());
+
                             debug!("Event packet: metadata: {:?}", msg.metadata());
                             cache.push(msg.digitizer_id(), metadata.clone(), msg.into());
 
diff --git a/nexus-writer/src/main.rs b/nexus-writer/src/main.rs
index 734a0c19..370fce2c 100644
--- a/nexus-writer/src/main.rs
+++ b/nexus-writer/src/main.rs
@@ -17,6 +17,7 @@ use supermusr_common::{
         messages_received::{self, MessageKind},
         metric_names::{FAILURES, MESSAGES_PROCESSED, MESSAGES_RECEIVED},
     },
+    record_metadata_fields_to_span,
     spanned::{Spanned, SpannedMut},
     tracer::{OptionalHeaderTracerExt, TracerEngine, TracerOptions},
     CommonKafkaOpts,
@@ -33,6 +34,7 @@ use supermusr_streaming_types::{
     ecs_se00_data_generated::{
         root_as_se_00_sample_environment_data, se_00_sample_environment_data_buffer_has_identifier,
     },
+    FrameMetadata,
 };
 use tokio::time;
 use tracing::{debug, error, info_span, level_filters::LevelFilter, trace_span, warn};
@@ -244,6 +246,16 @@ fn process_payload(nexus_engine: &mut NexusEngine, message_topic: &str, payload:
     }
 }
 
+#[tracing::instrument(skip_all,
+    fields(
+        metadata_timestamp = tracing::field::Empty,
+        metadata_frame_number = tracing::field::Empty,
+        metadata_period_number = tracing::field::Empty,
+        metadata_veto_flags = tracing::field::Empty,
+        metadata_protons_per_pulse = tracing::field::Empty,
+        metadata_running = tracing::field::Empty,
+    )
+)]
 fn process_frame_assembled_event_list_message(nexus_engine: &mut NexusEngine, payload: &[u8]) {
     counter!(
         MESSAGES_RECEIVED,
@@ -253,6 +265,13 @@ fn process_frame_assembled_event_list_message(nexus_engine: &mut NexusEngine, pa
     match root_as_frame_assembled_event_list_message(payload) {
         Ok(data) => match nexus_engine.process_event_list(&data) {
             Ok(run) => {
+                let metadata_result: Result<FrameMetadata, _> = data.metadata().try_into();
+                match metadata_result {
+                    Ok(metadata) => {
+                        record_metadata_fields_to_span!(&metadata, tracing::Span::current());
+                    }
+                    Err(e) => error!("{e}"),
+                };
                 if let Some(run) = run {
                     link_current_span_to_run_span!(run, "Frame Event List");
                 }