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1. Major error in jude_add_frames which underestimated the time by about 10%. 2. Factor of 10 increase in jude_add_frames. 3. Rewrote jude_coadd.pro to treat partial pixels. 4. Add jude_light_curve
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,218 @@ | ||
| ;+ | ||
| ; NAME: JUDE_CENTROID | ||
| ; PURPOSE: Improves registration by centroiding on a single star | ||
| ; CALLING SEQUENCE: | ||
| ; jude_centroid, events_file, grid2, params, xstar, ystar, $ | ||
| ; xoff = xoff, yoff = yoff ,$ | ||
| ; boxsize = boxsize,$ | ||
| ; init_size = init_size, medsiz = medsiz, $ | ||
| ; test = test, cent_file = cent_file, display = display, $ | ||
| ; nosave = nosave, defaults = defaults, new_star = new_star | ||
| ; INPUTS: | ||
| ; Events_file: Name of the input photon list (Level 2) file. | ||
| ; | ||
| ; OPTIONAL INPUTS: (If not defined beforehand, defined in the program) | ||
| ; Params: parameter list | ||
| ; Xstar: Known position of star. If blank, then position used | ||
| ; ycent: Ystar: in program is returned. | ||
| ; OUTPUT: | ||
| ; Grid2: Array containing final image. | ||
| ; KEYWORDS: | ||
| ; Xoff: If the spacecraft offsets are known, they are applied to | ||
| ; Yoff: the data; if not, they are calculated and passed back | ||
| ; Boxsize: The search box size for the star. If there is significant | ||
| ; spacecraft motion, boxsize may have to be larger. | ||
| ; Init_size: The initisal search box for a centroid in case the selection | ||
| ; is poor. | ||
| ; Medsize: I filter out noise using a median filter of Medsize. | ||
| ; Test: Stops every N frame to check the centroiding | ||
| ; Cent_file: Writes a file containing centroids and fluxes. | ||
| ; Defaults: If set, goes through without asking any questions | ||
| ; Display: If set, each frame is displayed. | ||
| ; Nosave: The default is to save the resulting events and images. If | ||
| ; this is set, they are not saved. | ||
| ; new_star: Forces selection of a star each time instead of reading from | ||
| ; the default file. | ||
| ; RESTRICTIONS: | ||
| ; none | ||
| ; NOTES: | ||
| ; | ||
| ;Modification history | ||
| ;JM: Apr. 07, 2017 | ||
| ;JM: Apr. 10, 2017: Generalized for FUV or NUV | ||
| ;JM: Apr. 11, 2017: Was not passing parameters. | ||
| ;JM: Apr. 14, 2017: Was not taking starting frame into account | ||
| ;JM: Apr. 16, 2017: Added write to parameters | ||
| ;JM: May 13, 2017: Improvements in centroiding by using known offsets. | ||
| ;JM: May 23, 2017: Version 3.1 | ||
| ;JM: Jun 10, 2017: Check to see if centroid stars are defined in header | ||
| ;JM: Jun 10, 2017: Code cleanup and fixes | ||
| ;JM: Jun 23, 2017: Corrected edge effect where the subarray was too small. | ||
| ;JM: Jul 24, 2017: Added option to not display array. | ||
| ;JM: Aug. 02, 2017: Explicitly print number of frames. | ||
| ;JM: Aug. 03, 2017: Added option to quit. | ||
| ;JM: Aug. 11, 2017: Nbin is redundant (params.fine_bin) so removed the option | ||
| ;JM: Aug. 21, 2017: Fixed an inconsistency in passing offsets | ||
| ;JM: Sep. 14, 2017: Fixed problem if the offsets were not defined. | ||
| ;JM: Nov. 7, 2017: Cosmetic changes. | ||
| ;JM: Nov. 25, 2017: Correct if a1 was not finite. | ||
| ;Copyright 2016 Jayant Murthy | ||
| ; | ||
| ; Licensed under the Apache License, Version 2.0 (the "License"); | ||
| ; you may not use this file except in compliance with the License. | ||
| ; You may obtain a copy of the License at | ||
| ; | ||
| ; http://www.apache.org/licenses/LICENSE-2.0 | ||
| ; | ||
| ; Unless required by applicable law or agreed to in writing, software | ||
| ; distributed under the License is distributed on an "AS IS" BASIS, | ||
| ; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| ; See the License for the specific language governing permissions and | ||
| ; limitations under the License. | ||
| ;- | ||
|
|
||
| function set_limits, grid2, xstar, ystar, boxsize, resolution,$ | ||
| xmin = xmin, ymin = ymin, display = display | ||
| siz = size(grid2) | ||
| ndim = siz[1] | ||
| xmin = xstar - boxsize*resolution | ||
| xmax = xstar + boxsize*resolution | ||
| ymin = ystar - boxsize*resolution | ||
| ymax = ystar + boxsize*resolution | ||
|
|
||
| xmin = 0 > xmin < (ndim - 1) | ||
| xmax = (xmin + 1) > xmax < (ndim - 1) | ||
| ymin = 0 > ymin < (ndim - 1) | ||
| ymax = (ymin + 1) > ymax < (ndim - 1) | ||
|
|
||
| if (keyword_set(display))then begin | ||
| plots,/dev, [xmin, xmin, xmax, xmax, xmin]/resolution,$ | ||
| [ymin, ymax, ymax, ymin, ymin]/resolution,$ | ||
| col=255,thick=2 | ||
| endif | ||
| if (((xmax - xmin) lt 5) or ((ymax - ymin) lt 5)) then begin | ||
| h1 = fltarr(2*boxsize*resolution, 2*boxsize*resolution) | ||
| endif else h1 = grid2[xmin:xmax, ymin:ymax] | ||
| return,h1 | ||
| end | ||
|
|
||
| pro jude_light_curve, events_file, out_file, $ | ||
| xoff = xoff, yoff = yoff , params = params, $ | ||
| nbin = nbin,$ | ||
| max_im_value = max_im_value, mask = mask | ||
|
|
||
| ;*********************** INITIALIZATION ************************** | ||
| if (n_elements(nbin) eq 0)then $ | ||
| read,"How many frames to bin over? ",nbin | ||
| ;MAX_IM_VALUE for different images | ||
| if (n_elements(max_im_value) eq 0)then max_im_value = 0.00001 ;For display | ||
| device,window_state = window_state | ||
| if (window_state[0] eq 0)then $ | ||
| window, 0, xs = 1024, ys = 512, xp = 10, yp = 500 | ||
| if (n_elements(params) eq 0)then params = jude_params() | ||
| naxis = 512 * params.resolution | ||
| ;************************* END INITIALIZATION *************************** | ||
|
|
||
| openw,write_lun,out_file,/get | ||
| ;Read data | ||
| data_l2 = mrdfits(events_file,1,data_hdr0, /silent) | ||
| ndata_l2 = n_elements(data_l2) | ||
|
|
||
| ;Set and check parameters | ||
| if (params.max_counts eq 0)then begin | ||
| q = where(data_l2.dqi eq 0, nq) | ||
| if (nq gt 10)then begin | ||
| dave = median(data_l2[q].nevents) | ||
| dstd = sqrt(dave) | ||
| params.max_counts = dave + dstd*3 | ||
| endif else params.max_counts = 1000 | ||
| endif | ||
| if (params.max_frame eq 0)then params.max_frame = ndata_l2 - 1 | ||
| ngrid = (params.max_frame - params.min_frame)/nbin | ||
| ref_frame = sxpar(data_hdr0, "REFFRAME") | ||
|
|
||
| ;If we haven't defined xoff and yoff set it to data_l2.xoff | ||
| if (n_elements(xoff) eq 0)then xoff = data_l2.xoff | ||
| if (n_elements(yoff) eq 0)then yoff = data_l2.yoff | ||
| q = where(abs(xoff) gt 500, nq) | ||
| if (nq gt 0)then xoff[q]= 0 | ||
| q = where(abs(yoff) gt 500, nq) | ||
| if (nq gt 0)then yoff[q]= 0 | ||
|
|
||
| ;Select ROI | ||
| if (n_elements(mask) eq 0)then begin | ||
| nframes = jude_add_frames(data_l2, grid2, pixel_time, params, $ | ||
| xoff*params.resolution, $ | ||
| yoff*params.resolution, /notime, $ | ||
| ref_frame = ref_frame) | ||
| ans = 'n' | ||
| while (ans eq 'n')do begin | ||
| tv,bytscl(rebin(grid2, 512, 512),0, max_im_value) | ||
| read,"Is the scaling ok? ",ans | ||
| if (ans eq 'n')then read, "New max value: ",max_im_value | ||
| endwhile | ||
| if (max(grid2) eq 0)then goto, noproc | ||
| print,"Please select midpoint of mask." | ||
| cursor,xstar,ystar,/dev | ||
| xstar = xstar*params.resolution | ||
| ystar = ystar*params.resolution | ||
| read, "Enter c for a circular mask; else square", ans | ||
| if (ans eq 'c')then begin | ||
| read,"Enter radius: ",boxsize | ||
| xmask = lindgen(naxis, naxis) mod naxis | ||
| ymask = lindgen(naxis, naxis)/naxis | ||
| dist = sqrt((xmask - xstar)^2 + (ymask - ystar)^2) | ||
| q = where(dist le boxsize, nq) | ||
| mask = fltarr(naxis, naxis) | ||
| if (nq gt 0)then mask[q] = 1 | ||
| endif else begin | ||
| read,"Enter half width of box side: ", boxsize | ||
| mask = fltarr(naxis, naxis) | ||
| mask[(xstar-boxsize)>0:(xstar+boxsize)<(naxis - 1), $ | ||
| (ystar-boxsize)>0:(ystar+boxsize)<(naxis - 1)] = 1 | ||
| endelse | ||
| endif | ||
| stop | ||
| ;Initial definitions for centroid region | ||
| xstar_first = xstar | ||
| ystar_first = ystar | ||
|
|
||
| ;Loop through data to centroid | ||
| start_frame = params.min_frame | ||
| end_frame = params.max_frame | ||
| time0 = systime(1) | ||
| for i=1l, ngrid - 1 do begin | ||
| str = string(i*nbin) | ||
| str = str + " S/C time: " | ||
| str = str + string(data_l2[i*nbin].time - data_l2[0].time) | ||
| str = str + " Time Left: " | ||
| str = str + string((systime(1) - time0)/float(i)*float(ngrid - i)) | ||
| print,strcompress(str), string(13b),format="(a,a,$)" | ||
| params.min_frame = start_frame + i*nbin | ||
| params.max_frame = params.min_frame + nbin - 1 | ||
| dqi = where(data_l2[params.min_frame:params.max_frame].dqi eq 0,ndqi) | ||
| if (ndqi gt 3)then begin | ||
| nframes = jude_add_frames(data_l2, grid2, pixel_time, params, $ | ||
| xoff*params.resolution, $ | ||
| yoff*params.resolution, /notime, ref_frame = ref_frame) | ||
|
|
||
| tv,bytscl(rebin(grid2,512,512),0,max_im_value) | ||
|
|
||
| ;Define a small array around star | ||
| carray = set_limits(grid2, xstar, ystar, boxsize, params.resolution, $ | ||
| xmin = xmin, ymin = ymin, display = display) | ||
| siz = size(carray, /dimensions) | ||
| xmax = xmin + siz[0] | ||
| ymax = ymin + siz[1] | ||
| if (siz[0] lt 2)then stop | ||
| tv,bytscl(rebin(carray, siz[0]*(512/siz[0]),siz[1]*(512/siz[0])),0,max_im_value),512,0 | ||
| plots,/dev,[xmin, xmin, xmax, xmax, xmin]/params.resolution,$ | ||
| [ymin, ymax, ymax, ymin, ymin]/params.resolution,col=255 | ||
| tcent = total(grid2*mask) | ||
| printf,write_lun, params.min_frame, $ | ||
| tcent,sqrt(tcent)/sqrt(float(nframes)), $ | ||
| nframes | ||
| endif else if (ndqi gt 3)then nlost = nlost + 1 | ||
| endfor | ||
| noproc: | ||
| end |