diff --git a/jf-live-writer/include/JFH5LiveWriter.hpp b/jf-live-writer/include/JFH5LiveWriter.hpp
index b20962c..a417631 100644
--- a/jf-live-writer/include/JFH5LiveWriter.hpp
+++ b/jf-live-writer/include/JFH5LiveWriter.hpp
@@ -16,10 +16,8 @@ class JFH5LiveWriter {
 
     const std::string detector_name_;
     const size_t n_modules_;
-
-    const uint64_t start_pulse_id_;
     const size_t n_pulses_;
-    const size_t pulse_id_step_;
+
     size_t write_index_;
 
     H5::H5File file_;
@@ -43,9 +41,7 @@ public:
     JFH5LiveWriter(const std::string& output_file,
                    const std::string& detector_folder,
                    const size_t n_modules,
-                   const uint64_t start_pulse_id,
-                   const size_t n_pulses,
-                   const size_t pulse_id_step);
+                   const size_t n_pulses);
     ~JFH5LiveWriter();
     void write(const ImageMetadata* metadata, const char* data);
 };
diff --git a/jf-live-writer/src/JFH5LiveWriter.cpp b/jf-live-writer/src/JFH5LiveWriter.cpp
index 324b5a0..5928a6e 100644
--- a/jf-live-writer/src/JFH5LiveWriter.cpp
+++ b/jf-live-writer/src/JFH5LiveWriter.cpp
@@ -12,14 +12,10 @@ using namespace buffer_config;
 JFH5LiveWriter::JFH5LiveWriter(const string& output_file,
                        const string& detector_folder,
                        const size_t n_modules,
-                       const uint64_t start_pulse_id,
-                       const size_t n_pulses,
-                       const size_t pulse_id_step) :
+                       const size_t n_pulses) :
         detector_name_(get_detector_name(detector_folder)),
         n_modules_(n_modules),
-        start_pulse_id_(start_pulse_id),
         n_pulses_(n_pulses),
-        pulse_id_step_(pulse_id_step),
         write_index_(0)
 {
     b_pulse_id_ = new uint64_t[n_pulses_];
@@ -123,7 +119,6 @@ void JFH5LiveWriter::close_file()
 
 void JFH5LiveWriter::write(const ImageMetadata* metadata, const char* data)
 {
-
     hsize_t offset[] = {write_index_, 0, 0};
 
     H5DOwrite_chunk(image_dataset_.getId(), H5P_DEFAULT, 0,
diff --git a/jf-live-writer/src/main.cpp b/jf-live-writer/src/main.cpp
index 123d4ea..f4ffd8d 100644
--- a/jf-live-writer/src/main.cpp
+++ b/jf-live-writer/src/main.cpp
@@ -112,8 +112,7 @@ int main (int argc, char *argv[])
                 ref(image_assembler));
     }
 
-    JFH5LiveWriter writer(output_file, detector_folder, n_modules,
-                      start_pulse_id, n_pulses, pulse_id_step);
+    JFH5LiveWriter writer(output_file, detector_folder, n_modules, n_pulses);
 
     for (uint64_t pulse_id:pulse_ids_to_write) {