xsh_mflat7

Usage

Overview

This recipe creates the master flat and the orders edges traces table frames.

Input Frames :
- [UVB] A set of n RAW frames (Format = RAW, n>=3, Tag = FLAT_D2_mode_UVB, mode=SLIT/IFU)
- [UVB] A set of n RAW frames (Format = RAW, n>=3, Tag = FLAT_QTH_mode_UVB)
- [VIS] A set of n RAW frames (Format = RAW, n>=3, Tag = FLAT_mode_VIS)
- [NIR] A set of n x n RAW frames ((Format = RAW, n>=3, Tag = FLAT_mode_NIR_ON, FLAT_mode_NIR_OFF)
- A spectral format table (Format = PRE, Tag = SPECTRAL_FORMAT_TAB_arm)
- An order table (Format = TABLE, Tag = ORDER_TAB_CENTR_arm)
- [UVB,VIS] A master bias (Format = PRE, Tag = MASTER_BIAS_arm)
- [OPTIONAL] A map of reference bad pixel (Format = QUP,RAW, Tag = BP_MAP_RP_arm)
- [OPTIONAL] A map of non linear pixel (Format = QUP,RAW, Tag = BP_MAP_NL_arm)
- [OPTIONAL,UVB,VIS] A master dark (Format = PRE, Tag = MASTER_DARK_arm)
Products :
- An updated order table with edge UP and edge LOW (Format = TABLE, TAG = ORDER_TAB_EDGES_mode_arm)
- A master flat (Format = PRE, PRO.CATG = MASTER_FLAT_mode_arm)
- The inter-order background frame (Format = PRE, PRO.CATG = MFLAT_BACK_mode_arm)
- The inter-order background sampling points grid table
(Format = PRE, PRO.CATG = MFLAT_GRID_BACK_mode_arm)
Prepare the flat frames.

Stack and sigma clip all the flat frames.

Subtract master bias.

Subtract master dark.

Detect order edge.

Subtract background.

Create the Master Flat.

Options

--keep-temp <str>

If ´no´, temporary files are deleted. (str; default: ´no´). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.keep-temp [default = no].

--debug-level <str>

Additional xshooter debug level. One of ´none´, ´low´, ´medium´, ´high´ (str; default: ´none´). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.debug-level [default = none].

--time-stamp <bool>

Add timestamp to product file name. (bool; default: False). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.time-stamp [default = False].

--decode-bp <int>

Integer representation of the bits to be considered bad when decoding the bad pixel mask pixel values. Most frequent codes relevant for the user: 0: good pixel, 8: pick-up noise, 16: cosmic-ray removed, 32: cosmic-ray unremoved, 128: calibration file defect, 256: hot pixel, 512: dark pixel, 4096: A/D converted saturation, 32768: non linear pixel, 1048576: extrapolated flux in NIR, 4194304: Interpolated flux during extraction. (int; default: 2144337919). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.decode-bp [default = 2144337919].

--pre-overscan-corr <int>

pre-overscan correction. 0: no correction 1: mean overscan correction 2: mean prescan correction 3: (mean pre+mean overscan)/2 correction (int; default: 1). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.pre-overscan-corr [default = 1].

--stack-method <str>

Method used to build master frame. (str; default: ´median´). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.stack-method [default = median].

--klow <float>

Kappa used to clip low level values, when method is set to ´mean´ (float; default: 5.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.klow [default = 5.0].

--khigh <float>

Kappa used to clip high level values, when method is set to ´mean´ (float; default: 5.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.khigh [default = 5.0].

--detectorder-edges-search-win-hsize <int>

During extraction the local spatial profile (=cross-order) of the spectrum is determined by collapsing the 2-dimensional spectrum along the dispersion axis. This parameter defines the half size of the region across which the spectrum is collapsed. This parameter affects flagged pixels interpolation. In case of spectrum gaps the recommended optimal value is: (size_of_gap [nm]/(2*size_of_pixel [nm])+1) (int; default: 50). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-edges-search-win-hsize [default = 50].

--detectorder-edges-flux-thresh <float>

Threshold in relative flux (compared to the central flux) below which the order edges are defined (float; default: 0.4). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-edges-flux-thresh [default = 0.4].

--detectorder-min-sn <float>

Minimum signal-to-noise ratio at the centroid of the orders (60 for SLIT-UVB,VIS,NIR, 20 for IFU-UVB,VIS, 4 for IFU-NIR (float; default: -1.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-min-sn [default = -1.0].

--detectorder-min-order-size-x <int>

Minimum order size in pixels along X direction [60 for UVB,VIS, 40 for NIR] (int; default: -1). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-min-order-size-x [default = -1].

--detectorder-chunk-half-size <int>

Half size in pixels of the chunks in Y direction (int; default: 1). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-chunk-half-size [default = 1].

--detectorder-slitlet-low-factor <float>

Factor for slitlet on lower edge slitlet (IFU) (float; default: 1.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-slitlet-low-factor [default = 1.0].

--detectorder-slitlet-up-factor <float>

Factor for slitlet on upper edge (IFU) (float; default: 1.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-slitlet-up-factor [default = 1.0].

--detectorder-fixed-slice <bool>

If true the size of slitlet is fixed (IFU) (bool; default: True). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-fixed-slice [default = True].

--detectorder-slice-trace-method <str>

method adopted for IFU slice tracing (´fixed´ for SLIT and ´sobel´ for IFU): (str; default: ´auto´). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-slice-trace-method [default = auto].

--detectorder-qc-mode <bool>

If true allows one to skip edge detection on orders below detectorder- min-sn (oly for QC mode, not to be set by normal users) (bool; default: False). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-qc-mode [default = False].

--detectorder-d2-min-sn <float>

minimum signal noise ratio in D2 lamp frame in order (float; default: 60.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.detectorder-d2-min-sn [default = 60.0].

--background-edges-margin <int>

X margin to order edge to define background sampling points (int; default: 1). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.background-edges-margin [default = 1].

--background-poly-deg-y <int>

Poly mode fit deg along Y. (int; default: 9). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.background-poly-deg-y [default = 9].

--background-poly-deg-x <int>

Poly mode fit deg along X. (int; default: 9). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.background-poly-deg-x [default = 9].

--background-poly-kappa <float>

Poly mode kappa value of kappa-sigma-clip outliers removal. (float; default: 10.0). The full name of this option for the EsoRex configuration file is xsh.xsh_mflat.background-poly-kappa [default = 10.0].

Note that it is possible to create a configuration file containing these options, along with suitable default values. Please refer to the details provided by the 'esorex --help' command.

Version

xsh_mflat 3.5.0