Update index.json file

index.json

 {
-	"version": "LTP04_1.1.0",
-	"release_date": "20221021",
+	"version": "LTP04_1.2.0",
+	"release_date": "20231113",
 	"descr": "Calibration package for LTP04",
 	"author": "Metis team",
 	"DOI": "",
@@ -232,6 +232,7 @@
 			{
 				"date": "",
 				"file_name": "demod/11.fits",
+				"error": "demod/11_err.fits",
 				"angle": 181.8,
 				"stokes": "I",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -241,6 +242,7 @@
 			{
 				"date": "",
 				"file_name": "demod/12.fits",
+				"error": "demod/12_err.fits",
 				"angle": 49.1,
 				"stokes": "I",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -250,6 +252,7 @@
 			{
 				"date": "",
 				"file_name": "demod/13.fits",
+				"error": "demod/13_err.fits",
 				"angle": 84.3,
 				"stokes": "I",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -259,6 +262,7 @@
 			{
 				"date": "",
 				"file_name": "demod/14.fits",
+				"error": "demod/14_err.fits",
 				"angle": 133.2,
 				"stokes": "I",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -268,6 +272,7 @@
 			{
 				"date": "",
 				"file_name": "demod/21.fits",
+				"error": "demod/21_err.fits",
 				"angle": 181.8,
 				"stokes": "Q",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -277,6 +282,7 @@
 			{
 				"date": "",
 				"file_name": "demod/22.fits",
+				"error": "demod/22_err.fits",
 				"angle": 49.1,
 				"stokes": "Q",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -286,6 +292,7 @@
 			{
 				"date": "",
 				"file_name": "demod/23.fits",
+				"error": "demod/23_err.fits",
 				"angle": 84.3,
 				"stokes": "Q",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -295,6 +302,7 @@
 			{
 				"date": "",
 				"file_name": "demod/24.fits",
+				"error": "demod/24_err.fits",
 				"angle": 133.2,
 				"stokes": "Q",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -304,6 +312,7 @@
 			{
 				"date": "",
 				"file_name": "demod/31.fits",
+				"error": "demod/31_err.fits",
 				"angle": 181.8,
 				"stokes": "U",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -313,6 +322,7 @@
 			{
 				"date": "",
 				"file_name": "demod/32.fits",
+				"error": "demod/32_err.fits",
 				"angle": 49.1,
 				"stokes": "U",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -322,6 +332,7 @@
 			{
 				"date": "",
 				"file_name": "demod/33.fits",
+				"error": "demod/33_err.fits",
 				"angle": 84.3,
 				"stokes": "U",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -331,6 +342,7 @@
 			{
 				"date": "",
 				"file_name": "demod/34.fits",
+				"error": "demod/34_err.fits",
 				"angle": 133.2,
 				"stokes": "U",
 				"descr": "Demodulation tensor element for nominal voltages",
@@ -1405,15 +1417,15 @@
 				"validity": "False"
 			},
 			"iaps_gain": {
-				"value": 1.0,
+				"value": 26.8,
 				"error": 0.0,
-				"units": "DN/e-",
+				"units": "DN/rev. ph",
 				"source": "TBD",
 				"descr": "UVDA average IAPS detector gain",
 				"validity": "False"
 			},
 			"f_noise": {
-				"value": 1.0,
+				"value": 1.4,
 				"error": 0.0,
 				"units": "N/A",
 				"source": "TBD",
@@ -1429,8 +1441,8 @@
 				"validity": "False"
 			},
 			"opt_efficiency": {
-				"file_name": "UV_RC_eff_map_det.fits",
-				"error": "UV_RC_err_map_det.fits",
+				"file_name": "UV_eff_map_det_p_v02.fits",
+				"error": "UV_err_map_det_new.fits",
 				"source": "TBD",
 				"descr": "Combination of door UV/VL intensity ratio map with in-flight radiometric response to be used as map of optical and radiometric efficiency",
 				"validity": "False"