added first tests for reading files

data/scripts/read_first_frame_number.py

@@ -0,0 +1,29 @@
+import numpy as np
+from pathlib import Path
+
+header_dt = np.dtype(
+    [
+        ("Frame Number", "u8"),
+        ("SubFrame Number/ExpLength", "u4"),
+        ("Packet Number", "u4"),
+        ("Bunch ID", "u8"),
+        ("Timestamp", "u8"),
+        ("Module Id", "u2"),
+        ("Row", "u2"),
+        ("Column", "u2"),
+        ("Reserved", "u2"),
+        ("Debug", "u4"),
+        ("Round Robin Number", "u2"),
+        ("Detector Type", "u1"),
+        ("Header Version", "u1"),
+        ("Packets caught mask", "8u8")
+    ]
+)
+
+
+
+with open("data/eiger/eiger_500k_16bit_d0_f0_0.raw", "rb") as f:
+    for i in range(3):
+        frame_number = np.fromfile(f, dtype=header_dt, count=1)["Frame Number"][0]
+        print(frame_number)
+        f.seek(262144,1)