diff --git a/disperser/dataapi/nonsigner_handler.go b/disperser/dataapi/nonsigner_handler.go
index 7eac596ab..609c629dd 100644
--- a/disperser/dataapi/nonsigner_handler.go
+++ b/disperser/dataapi/nonsigner_handler.go
@@ -200,7 +200,7 @@ func computeNumFailed(batches []*BatchNonSigningInfo, operatorQuorumIntervals Op
 func computeNumResponsible(batches []*BatchNonSigningInfo, operatorQuorumIntervals OperatorQuorumIntervals) map[string]map[uint8]int {
 	// Create quorumBatches, where quorumBatches[q].AccuBatches is the total number of
 	// batches in block interval [startBlock, b] for quorum "q".
-	quorumBatches := CreatQuorumBatches(batches)
+	quorumBatches := CreatQuorumBatches(CreateQuorumBatchMap(batches))
 
 	numResponsible := make(map[string]map[uint8]int)
 	for op, val := range operatorQuorumIntervals {
diff --git a/disperser/dataapi/nonsigner_utils.go b/disperser/dataapi/nonsigner_utils.go
index 0fcf020f0..0a8ef2217 100644
--- a/disperser/dataapi/nonsigner_utils.go
+++ b/disperser/dataapi/nonsigner_utils.go
@@ -209,9 +209,9 @@ func ComputeNumBatches(quorumBatches *QuorumBatches, startBlock, endBlock uint32
 	return num
 }
 
-// CreatQuorumBatches returns quorumBatches, where quorumBatches[q] is a list of
-// QuorumBatches in ascending order by block number.
-func CreatQuorumBatches(batches []*BatchNonSigningInfo) map[uint8]*QuorumBatches {
+// CreateQuorumBatchMap returns quorumBatchMap, where quorumBatchMap[q][b] means the number of
+// batches at block b that have dispersed to quorum q.
+func CreateQuorumBatchMap(batches []*BatchNonSigningInfo) map[uint8]map[uint32]int {
 	quorumBatchMap := make(map[uint8]map[uint32]int)
 	for _, batch := range batches {
 		for _, q := range batch.QuorumNumbers {
@@ -221,6 +221,12 @@ func CreatQuorumBatches(batches []*BatchNonSigningInfo) map[uint8]*QuorumBatches
 			quorumBatchMap[q][batch.ReferenceBlockNumber]++
 		}
 	}
+	return quorumBatchMap
+}
+
+// CreatQuorumBatches returns quorumBatches, where quorumBatches[q] is a list of
+// QuorumBatches in ascending order by block number.
+func CreatQuorumBatches(quorumBatchMap map[uint8]map[uint32]int) map[uint8]*QuorumBatches {
 	quorumBatches := make(map[uint8]*QuorumBatches)
 	for q, s := range quorumBatchMap {
 		numBatches := make([]*NumBatchesAtBlock, 0)
diff --git a/disperser/dataapi/nonsigner_utils_test.go b/disperser/dataapi/nonsigner_utils_test.go
index 0a0283628..cad6d5a33 100644
--- a/disperser/dataapi/nonsigner_utils_test.go
+++ b/disperser/dataapi/nonsigner_utils_test.go
@@ -461,7 +461,7 @@ func TestCreatQuorumBatches(t *testing.T) {
 		},
 	}
 
-	quorumBatches := dataapi.CreatQuorumBatches(batchNonSigningInfo)
+	quorumBatches := dataapi.CreatQuorumBatches(dataapi.CreateQuorumBatchMap(batchNonSigningInfo))
 
 	assert.Equal(t, 3, len(quorumBatches))