diff --git a/pkg/producer/aux.go b/pkg/producer/aux.go
index 964f2dd..db2bb55 100644
--- a/pkg/producer/aux.go
+++ b/pkg/producer/aux.go
@@ -134,6 +134,13 @@ func (r *Registrator) ComputeMetaAndRPC(scene *Scene) (topLeft, bottomRight orb.
 	scene.Meta.Pitch = aux0.Eular2 * 180 / math.Pi
 	scene.Meta.Roll = aux0.Eular1 * 180 / math.Pi
 
+	ebox0 := r.auxBoxes[r.sceneOffsetInAuxIndex(scene, 0)]
+	if scene.Type == "PAN" {
+		scene.Meta.IntegratedLevel = int(ebox0.PIntegrationLevel)
+	} else {
+		scene.Meta.IntegratedLevel = int(ebox0.B1IntegrationLevel)
+	}
+
 	_, centerT, _ := r.SceneImageTime(scene)
 	scene.Meta.SunAzimuth = SunAzimuth(centerT,
 		scene.Meta.CentreLocation.Longitude,
diff --git a/pkg/rrc/moment_matching.go b/pkg/rrc/moment_matching.go
index c00cbce..f8c9f05 100644
--- a/pkg/rrc/moment_matching.go
+++ b/pkg/rrc/moment_matching.go
@@ -8,7 +8,6 @@ import (
 )
 
 // Destriping multisensor imagery with moment matching [Gadallah, 2000]
-// 基于探元直方图匹配的CBERS01星CCD数据相对辐射校正方法 [潘志强, 2005]
 func DoMomentMatching(originalImg gocv.Mat) {
 	probes := originalImg.Cols()
 	log.Printf("do moment matching for %d probes, %d rows", probes, originalImg.Rows())
diff --git a/pkg/rrc/rrc.go b/pkg/rrc/rrc.go
index 9154f4d..4abedd1 100644
--- a/pkg/rrc/rrc.go
+++ b/pkg/rrc/rrc.go
@@ -49,6 +49,7 @@ func (rrc *RRC) Statistical(dsPAN, dsMSS string) error {
 
 func (rrc *RRC) Close() {}
 
+// 基于探元直方图匹配的CBERS01星CCD数据相对辐射校正方法 [潘志强, 2005]
 // 统计探元灰度的累积概率密度
 func (rrc *RRC) StatisticalPAN(dsfile string) error {
 	utils.PrintMemStats()