# 6. Analyze a Transient Thermoreflectance Image in SanjANALYZER

# 6. Analyze a Transient Thermoreflectance Image in SanjANALYZER

SanjANALYZER opens `.fdi` (Low Frequency) or `.tti` (Transient) data files. Load a thermal image by double-clicking the file of interest in the file selection control; the CCD and thermal images then appear in the display windows.

Worked example — image series analysis:

1. Select the first image of the transient series.
2. Enter the **"number of images in the series"** (51 in the example).
3. Select an ROI box on the area of interest (on top of the 5 µm Gold heater in the source example).
4. Select **"Process Series."**

The software steps through the image series and plots the data in the **"ROI Mean Series"** graph, lower left. Right-click the y-axis to auto-scale the graph.

Reference: Under the **Cross-Section** tab, select the correct **"Objective"** used during imaging to get the correct pixel-to-distance scale before saving a cross-section (ASCII, tab-delimited).