Remove most of astropy

power_plot.py

 #!/usr/bin/env python3
 
-from astropy.table import Table
 from astropy.time import Time
-from astropy.coordinates import ICRS, AltAz, EarthLocation, SkyCoord
-import astropy.units as u
-import astropy.constants
 
 import sys
 import os
@@ -44,7 +40,7 @@ last_seconds = 10 * 60
 class PowerPlot:
     """A power plot with two time scales"""
 
-    def __init__(self, fig, freq):
+    def __init__(self, fig):
         self.fig = fig
         self.ax = fig.add_subplot()
         self.ax.set_xlabel("time (s)")
@@ -54,7 +50,7 @@ class PowerPlot:
         self.ax.xaxis.set_major_formatter(
             FuncFormatter(lambda x, pos: f"{num2date(x):%H:%M}")
         )
-        fig.suptitle(f"Sgr A Occultation ({freq:.0f} MHz)", fontsize=16)
+        fig.suptitle(f"Plot title", fontsize=16)
         fig.tight_layout()
         (self.totalplot,) = self.ax.plot([], [], "-", color="blue")
         (self.totalplothighlight,) = self.ax.plot(
@@ -121,16 +117,6 @@ class PowerPlotMainWindow(QMainWindow):
                 column_names = line.split()
                 break
 
-        table = Table.read("".join(header_lines), format="ascii.ecsv")
-
-        self.col_first_bin = table.meta["spectrum"]["col_first_bin"]
-        freqs = (
-            np.array([float(col) for col in table.columns[self.col_first_bin :]]) / 1e6
-        )  # In MHz
-        num_bins = table.meta["spectrum"]["bins"]
-        in_db = table.meta["spectrum"]["db"]
-        freq = table.meta["vrt"]["frequency"] / 1e6
-
         line = sys.stdin.readline()
         values = line.split(",")
         self.time_dt = np.array(Time(values[0], format="unix").to_datetime())
@@ -140,9 +126,7 @@ class PowerPlotMainWindow(QMainWindow):
 
         self.min_range = np.arange(-last_seconds, 1, 1)
 
-        self.data = np.array(
-            [(np.array(values[self.col_first_bin :], dtype=float).mean())]
-        )
+        self.data = np.array([float(values[1])])
 
         self.start_time = Time("2023-12-13T09:15:00").to_datetime()
         self.stop_time = Time("2023-12-13T11:30:00").to_datetime()
@@ -169,7 +153,7 @@ class PowerPlotMainWindow(QMainWindow):
 
         # fig.canvas.manager.set_window_title("Dwingeloo Radio Telescope")
 
-        self.powerplot = PowerPlot(fig, freq)
+        self.powerplot = PowerPlot(fig)
 
         self.read_stdin()
         self.stdin_notifier = QSocketNotifier(
@@ -186,12 +170,9 @@ class PowerPlotMainWindow(QMainWindow):
             self.output_counter += 1
             values = line.split(",")
             time_now = float(values[0])
-            power_now = (
-                np.array(values[self.col_first_bin :], dtype=float)[0]
-            )
-            self.time_dt = np.append(
-                self.time_dt, Time(values[0], format="unix").to_datetime()
-            )
+            power_now = float(values[1])
+
+            self.time_dt = np.append(self.time_dt, Time(values[0], format="unix").to_datetime())
             self.data = np.append(self.data, power_now)
 
             self.last_x_buffer = np.roll(self.last_x_buffer, -1)
@@ -212,8 +193,6 @@ class PowerPlotMainWindow(QMainWindow):
                 self.powerplot.fig.canvas.flush_events()
             self.last_update = now
 
-            # time.sleep(1)
-
 
 def handle_interrupt_signal(signum, frame):
     print("Ctrl+C pressed. Handling interrupt signal.")