Add some example detector efficiency CSV files that we would support

Author: wcjohns

target/testing/test_data/det_eff/25-163U01_ES2502_23003-1-F-1_gamEff.csv

@@ -0,0 +1,127 @@
+energy_keV,efficiency_used
+48.814,3.098000e-03
+49.638,3.234000e-03
+50.468,3.368000e-03
+51.616,3.550000e-03
+56.85,4.295000e-03
+57.833,4.420000e-03
+58.7,4.526000e-03
+59.589,4.630000e-03
+61.893,4.883000e-03
+63.227,5.018000e-03
+64.371,5.126000e-03
+65.49,5.228000e-03
+67.661,5.408000e-03
+68.735,5.489000e-03
+72.601,5.750000e-03
+74.936,5.881000e-03
+77.603,6.014000e-03
+78.455,6.050000e-03
+89.559,6.404000e-03
+92.365,6.461000e-03
+93.302,6.476000e-03
+94.629,6.497000e-03
+96.245,6.516000e-03
+97.15,6.530000e-03
+98.475,6.543000e-03
+99.63,6.556000e-03
+101.009,6.569000e-03
+102.935,6.583000e-03
+104.176,6.591000e-03
+110.37,6.612000e-03
+111.255,6.610000e-03
+113.52,6.609000e-03
+114.376,6.606000e-03
+115.286,6.605000e-03
+116.173,6.605000e-03
+119.684,6.594000e-03
+122.93,6.575000e-03
+124.203,6.567000e-03
+125.125,6.562000e-03
+129.215,6.531000e-03
+141.591,6.390000e-03
+143.241,6.367000e-03
+144.11,6.355000e-03
+146.014,6.327000e-03
+148.468,6.289000e-03
+152.629,6.221000e-03
+160.174,6.083000e-03
+161.366,6.059000e-03
+164.471,5.996000e-03
+169.345,5.894000e-03
+171.261,5.848000e-03
+179.079,5.663000e-03
+185.579,5.504000e-03
+187.945,5.440000e-03
+189.237,5.404000e-03
+195.55,5.232000e-03
+201.433,5.172000e-03
+203.425,5.131000e-03
+207.883,5.042000e-03
+225.359,4.699000e-03
+238.228,4.458000e-03
+243.275,4.364000e-03
+248.725,4.270000e-03
+255.347,4.152000e-03
+263.906,4.010000e-03
+267.522,3.953000e-03
+295.113,3.556000e-03
+297.456,3.524000e-03
+302.806,3.455000e-03
+307.905,3.393000e-03
+311.735,3.347000e-03
+316.385,3.295000e-03
+320.818,3.242000e-03
+323.803,3.209000e-03
+332.816,3.114000e-03
+336.05,3.082000e-03
+338.208,3.056000e-03
+341.522,3.028000e-03
+345.009,2.995000e-03
+351.505,2.932000e-03
+361.955,2.843000e-03
+367.075,2.800000e-03
+368.573,2.789000e-03
+375.064,2.736000e-03
+380.184,2.697000e-03
+382.76,2.678000e-03
+392.933,2.603000e-03
+399.635,2.553000e-03
+413.72,2.467000e-03
+414.621,2.463000e-03
+422.619,2.414000e-03
+426.704,2.390000e-03
+430.251,2.365000e-03
+445.786,2.282000e-03
+451.507,2.256000e-03
+457.61,2.216000e-03
+481.54,2.116000e-03
+510.973,1.996000e-03
+583.098,1.775000e-03
+609.251,1.692000e-03
+613.179,1.686000e-03
+618.315,1.667000e-03
+633.104,1.641000e-03
+639.791,1.619000e-03
+645.833,1.606000e-03
+651.877,1.599000e-03
+658.882,1.580000e-03
+662.494,1.569000e-03
+703.732,1.493000e-03
+717.442,1.462000e-03
+722.155,1.453000e-03
+727.226,1.465000e-03
+756.059,1.396000e-03
+766.295,1.361000e-03
+769.226,1.374000e-03
+803.092,1.311000e-03
+870.59,1.232000e-03
+964.661,1.135000e-03
+1001.07,1.021000e-03
+1267.67,8.667000e-04
+1274.81,8.685000e-04
+1315.39,8.313000e-04
+1460.58,7.507000e-04
+1764.51,6.223000e-04
+2104.8,5.260000e-04
+2614.51,4.391000e-04