diff --git a/pipeline/scripts/create_postprocessing_dataframes.jl b/pipeline/scripts/create_postprocessing_dataframes.jl
new file mode 100644
index 000000000..4b3ea1568
--- /dev/null
+++ b/pipeline/scripts/create_postprocessing_dataframes.jl
@@ -0,0 +1,14 @@
+using EpiAwarePipeline, EpiAware, JLD2, DrWatson, DataFramesMeta, CSV
+
+## Define scenarios
+scenarios = ["measures_outbreak", "smooth_outbreak", "smooth_endemic", "rough_endemic"]
+
+if !isfile(plotsdir("plotting_data/predictions.csv"))
+    @info "Prediction dataframe does not exist, generating now"
+    include("create_prediction_dataframe.jl")
+end
+
+if !isfile(plotsdir("plotting_data/truthdata.csv"))
+    @info "Truth dataframe does not exist, generating now"
+    include("create_truth_dataframe.jl")
+end
diff --git a/pipeline/scripts/create_prediction_dataframe.jl b/pipeline/scripts/create_prediction_dataframe.jl
index 9d02c6de1..fb70a2458 100644
--- a/pipeline/scripts/create_prediction_dataframe.jl
+++ b/pipeline/scripts/create_prediction_dataframe.jl
@@ -1,9 +1,3 @@
-using EpiAwarePipeline, EpiAware, AlgebraOfGraphics, JLD2, DrWatson, DataFramesMeta,
-      Statistics, Distributions, DrWatson, CSV
-
-## Define scenarios
-scenarios = ["measures_outbreak", "smooth_outbreak", "smooth_endemic", "rough_endemic"]
-
 ## Define true GI means
 true_gi_means = [2.0, 10.0, 20.0]
 
diff --git a/pipeline/scripts/create_truth_dataframe.jl b/pipeline/scripts/create_truth_dataframe.jl
new file mode 100644
index 000000000..2dc7125bc
--- /dev/null
+++ b/pipeline/scripts/create_truth_dataframe.jl
@@ -0,0 +1,11 @@
+truth_df = mapreduce(vcat, scenarios) do scenario
+    truth_data_files = readdir(datadir("truth_data")) |>
+                       strs -> filter(s -> occursin("jld2", s), strs) |>
+                               strs -> filter(s -> occursin(scenario, s), strs)
+    mapreduce(vcat, truth_data_files) do filename
+        D = load(joinpath(datadir("truth_data"), filename))
+        make_truthdata_dataframe(D, scenario)
+    end
+end
+
+CSV.write(plotsdir("plotting_data/truthdata.csv"), truth_df)
diff --git a/pipeline/src/analysis/make_truthdata_dataframe.jl b/pipeline/src/analysis/make_truthdata_dataframe.jl
index 1adedeb9b..66159687a 100644
--- a/pipeline/src/analysis/make_truthdata_dataframe.jl
+++ b/pipeline/src/analysis/make_truthdata_dataframe.jl
@@ -1,25 +1,20 @@
-
 """
-    make_truthdata_dataframe(filename, truth_data, pipelines; I_0 = 100.0)
-
 Create a DataFrame containing truth data for analysis.
 
 # Arguments
-- `filename::String`: The name of the file.
-- `truth_data::Dict`: A dictionary containing truth data.
-- `pipelines::Array`: An array of pipelines.
-- `I_0::Float64`: Initial value for I_t (default: 100.0).
+- `truth_data`: A dictionary containing truth data.
+- `scenario`: Name of the truth data scenario.
 
 # Returns
-- `df::DataFrame`: A DataFrame containing the truth data.
+- `df::DataFrame`: A DataFrame containing the summarised truth data.
 
 """
-function make_truthdata_dataframe(filename, truth_data, pipelines; I_0 = 100.0)
+function make_truthdata_dataframe(truth_data::Dict, scenario::String)
     I_t = truth_data["I_t"]
+    I_0 = truth_data["truth_I0"]
     true_mean_gi = truth_data["truth_gi_mean"]
     log_It = _calc_log_infections(I_t)
     rt = _calc_rt(I_t, I_0)
-    scenario = _get_scenario_from_filename(filename, pipelines)
     truth_procs = (; log_I_t = log_It, rt, Rt = truth_data["truth_process"])
 
     df = mapreduce(vcat, keys(truth_procs)) do target
diff --git a/pipeline/test/analysis/make_truthdata_dataframe.jl b/pipeline/test/analysis/make_truthdata_dataframe.jl
new file mode 100644
index 000000000..866427ce0
--- /dev/null
+++ b/pipeline/test/analysis/make_truthdata_dataframe.jl
@@ -0,0 +1,18 @@
+@testset "make_truthdata_dataframe tests" begin
+    truth_data = Dict(
+        "I_t" => [10, 20, 30],
+        "truth_I0" => 5,
+        "truth_gi_mean" => 2.5,
+        "truth_process" => [1.0, 1.5, 2.0]
+    )
+    scenario = "test_scenario"
+
+    df = make_truthdata_dataframe(truth_data, scenario)
+
+    @test typeof(df) == DataFrame
+    @test size(df, 1) == 9  # 3 targets * 3 time points
+    @test all(df.Scenario .== scenario)
+    @test all(df.True_GI_Mean .== truth_data["truth_gi_mean"])
+    @test all(df.Target .==
+              ["log_I_t", "log_I_t", "log_I_t", "rt", "rt", "rt", "Rt", "Rt", "Rt"])
+end
diff --git a/pipeline/test/analysis/test_analysis.jl b/pipeline/test/analysis/test_analysis.jl
index 58076ec5d..1e2608aea 100644
--- a/pipeline/test/analysis/test_analysis.jl
+++ b/pipeline/test/analysis/test_analysis.jl
@@ -1 +1,2 @@
 include("make_prediction_dataframe_from_output.jl")
+include("make_truthdata_dataframe.jl")