.. index:: Nonlinearity, PTC, BFE (VIS); NISP LED flats .. _calobs-block-rec-nisp-flats: **CALBLOCK-REC-004:** NISP LED flats ==================================== .. include:: definitions.rst Observation configuration file ------------------------------ | :download:`ocf_REC-004.csv ` Scheduling ---------- Once, after full thermal decontamination. In case of failure, repeat at next possible opportunity. Time-critical ------------- No. Dependencies ------------ Must be executed after F-001 if scheduled back-to-back (to avoid persistence effects in the F-001 data). Objective --------- Will take :ref:`LED flats ` for master-flat creation and :ref:`persistence ` monitoring. This calblock is a simple clone of the NISP part of :ref:`calobs-block-f-visNL-nispLED`. Observations ------------ 30 LED flats for each LED, targeting 4 kADU fluence per exposure (90 e-/s LED flux). Afterwards, 4.5h of photo-MACC darks are taken for persistence decay. .. code-block:: python :caption: **NISP LED flats.** NISP: Configure FWA = dark for LED in [A, B, C, D, E]: LED flux = 90 e-/s Take 30 photo-MACC exposures Take 30 MACC(15,16,11) darks for persistence decay. .. csv-table:: **NISP LED flux lookup table. Use the settings for 90 e-/s.** :download:`CSV file ` :file: tables/NISP_LED_flux_LUT_flat.dat Fulfilling ---------- :ref:`calobs-nisp-led-flats` :ref:`calobs-nisp-badpixmap` (:ref:`calobs-nisp-persistence`; partially) (:ref:`calobs-nisp-inoculation`; optional) Targets and pointing constraints -------------------------------- :command:`Pointing`: Unconstrained, off-sky calibration. Instrument configuration ------------------------ Instrument: Special. Methodology / Uplink procedure ------------------------------ :command:`Entity`: NISP :command:`Commanding Method`: :command:`Dither Sequence`: N/A Inter-operability constraints ----------------------------- None. In-orbit duration ----------------- :command:`In-orbit Duration`: 10.0 h Stabilisation time for each LED: 10s, DPU 10s after readout before new exposure starts, 111s for photo-MACC, 30 frames per LED. ``(10+111+10)s *30*5 = 5.5 h`` Additional 4.5 hours of persistence decay time: 10.0h Data volume ----------- Total: 10620 MB NISP: ``150*NP + 30*NP = 10620 MB`` Processing input ---------------- :command:`Ground Processing Input Data`: TBD :command:`Data Description`: 150 NISP flats, 30 NISP darks Processing tools ---------------- TBD Quality control parameters -------------------------- DataModel: ``_ Contact person -------------- Calibration Lead Observation record ------------------ .. raw:: latex \clearpage .. raw:: latex \clearpage