In summary, the statistical results collected between 5:00 and 12:00 AM on April 2, 2025. For each injection, we calculate the frequency mean value 
(f_mean) and the peak height (P) of 194Pb ions for frames with t > 0.14 s, correct each injection’s frequency by subtracting f_mean, and only sum 
the 
spectra from injections with P > 100; moreover, by comparing the 194Pb82+ spectrum with that of 184Pt78+—whose isomer at 1.8 MeV (T1/2 = 1 ms) is 
clearly visible—the setup is demonstrated to be suitable for detecting an isomer with a lifetime of about 1 ms.
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How to dod analysis and plot this result:
1. Add up injections and create accumulated spectrum.
(pyroot) gpuuser@appc256:/data.local/G22-00018_00203/scripts/OnlineDataAnalysisSystem/shift/20250331/data$ sh generate_data.sh /data.local/G22-
00018_00203/results/analyzers/RSA01 RSA01- 
'*.tiq_spectrogram.npz' 2025.04.02.05.00.00.000 2025.04.02.12.00.00.000 0.001 408.59e6 408.62e6 0.1 1

After run this command, you will create the accumulated spectrum under the folder with time stamp of start time and stop time.

2. Download the code "plot_fft.cxx" and plot the spectrum with following command:
...2025.04.02.05.00.00.000_2025.04.02.12.00.00.000$ root
   ------------------------------------------------------------------
  | Welcome to ROOT 6.32.10                        https://root.cern |
  | (c) 1995-2024, The ROOT Team; conception: R. Brun, F. Rademakers |
  | Built for linuxx8664gcc on Feb 12 2025, 01:50:41                 |
  | From tags/6-32-10@6-32-10                                        |
  | With                                                             |
  | Try '.help'/'.?', '.demo', '.license', '.credits', '.quit'/'.q'  |
   ------------------------------------------------------------------

root [0] .L plot_fft.cxx
root [1] plot_fft("2025.4.2 5:00~12:00",411.14e6,411.18e6,0,100)