From 92c99c1b18f24297cce9c9d13f819b7cba544337 Mon Sep 17 00:00:00 2001
From: Andrew Loeliger <loeliger@wisc.edu>
Date: Fri, 21 Jun 2024 10:13:17 -0500
Subject: [PATCH] Change CICADA unpacker to read the last 4 words instead of
 first 4

---
 .../plugins/implementations_stage2/CICADAUnpacker.cc        | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/EventFilter/L1TRawToDigi/plugins/implementations_stage2/CICADAUnpacker.cc b/EventFilter/L1TRawToDigi/plugins/implementations_stage2/CICADAUnpacker.cc
index ee1d613bf6564..202c112f83b69 100644
--- a/EventFilter/L1TRawToDigi/plugins/implementations_stage2/CICADAUnpacker.cc
+++ b/EventFilter/L1TRawToDigi/plugins/implementations_stage2/CICADAUnpacker.cc
@@ -27,9 +27,9 @@ namespace l1t {
         return false;
       } else {
         std::vector<uint32_t> cicadaWords = {0, 0, 0, 0};
-        //the first 4 words are CICADA words
-        for (uint32_t i = 0; i < 4; ++i) {
-          cicadaWords.at(i) = ((block.payload().at(i)) >> 28);
+        //the last 4 words are CICADA words
+        for (uint32_t i = 2; i < 6; ++i) {
+          cicadaWords.at(i-2) = ((block.payload().at(i)) >> 28);
         }
 
         float cicadaScore = convertCICADABitsToFloat(cicadaWords);