HARM Detector Raw and Processed Data for Flight campaign: Johannesburg (JNB) -> Durban (DUR) -> Cape Town (CPT)
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HARM Detector Raw and Processed Data Flight campaign: Johannesburg (JNB) -> Durban (DUR) -> Cape Town (CPT), 2025-05-25; and CPT -> JNB, 2025-06-01. 1. Instrument - High-Altitude Radiation Monitor (HARM). - Two silicon diodes, SD1 and SD2, measuring energy deposition from cosmic radiation. Each diode is 2.1 cm x 1.1 cm x 300 um depletion layer; mass 0.1614691 g. - Sampling: one ADC event every ~1 s; data binned into 1-minute intervals for dose-rate calculation. 2. Repository layout 1_HARM_raw_data/ raw ASCII logs from the RPiRENA DAQ 2_Analysis_Notebooks/ Jupyter notebooks that convert raw data -> dose 3_Processed_Dose_Data/ final absorbed dose rates (uGy/hr) 3. Raw data format - Two row types in each raw file, distinguished by the 'Detector' column: * RPiRENA-HK : housekeeping (voltages, temperatures, thresholds) * RPiRENA-EV : per-event ADC data from SD1 and SD2 - Key columns: Date, Time, Detector, Channel, SD1, SD2 - Channel coding: 0x10 = SD1 single-diode event 0x20 = SD2 single-diode event 0x91, 0xa1, 0xb1 = SD1/SD2 coincidence channels - Timestamps use a placeholder date (2000-01-01); sometimes the timestamps goes back to factory reset (2000-01-01); the actual flight date is given in the filename. 4. Analysis notebooks - The analysis is performed in Python 3. To replicate the results, run the Jupyter Notebooks in the 2_Analysis_Notebooks folder in the order indicated by their prefix (1, 2). The notebooks require the following Python libraries: pandas, numpy, matplotlib, scikit-learn." - For instance; 1_2025_05_25_JNB_DUR_analysis.ipynb : parses the raw file, separates SD1/SD2 and coincidence channels, bins counts per minute, converts ADC -> MeV, and computes absorbed dose rate and flux. 5. Processed data - For instance; 1_2025_05_25_JNB_DUR_absorbed dose.xlsx Column A: Time (Min) - elapsed minutes from take-off Column B: SD1 (uGy/hr) - absorbed dose rate, diode 1 Column C: SD2 (uGy/hr) - absorbed dose rate, diode 2 - Dose rate derived per minute bin from D = (K / M) * N * E / dt [Gy/h], converted to uGy/h where K = 1.602176487e-13 J/MeV, M = diode mass, N = counts in the bin, E = mean energy per event (MeV), dt = 1/60 h. - Typical cruise-level values ~0.3-3 uGy/hr; the late-flight increase (up to ~90 uGy/hr) corresponds to descent and ground-level radiation at DUR.



