Skip to content
GitLab
Switch branch/tag
Find file Normal viewHistoryPermalink
data_model.md.txt 23.6 KB
Newer Older
BO ZHANG's avatar
initiate csst-l1doc  
BO ZHANG committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230 
# L1-MBI Data model

## File: *_{img/wht/flg}_L1_1.fits

### File contents
| HDU  | data                    | note       |
|------|-------------------------|------------|
| HDU0 | None                    | PrimaryHDU |
| HDU1 | reduced image (9k x 9k) | ImageHDU   |


### HDU0
| keyword | value | comment       | fallback_value | type | module    |
|---------|:------|---------------|----------------|------|-----------|
| SIMPLE  | True  | Fits standard | True           | bool | csst_sims |     

### HDU1

#### Header of `csst_ms_mbi_instrument`
| keyword   | value                     | comment                       | fallback_value | type | module                  |
|-----------|:--------------------------|-------------------------------|----------------|------|-------------------------|
|SATURATE   | 1833.333333333333         |                                                |                | f32  | csst_ms_mbi_instrument   |         
|CRCOUNT    | 66791                     |                                                |                | i8   | csst_ms_mbi_instrument   |
|INST_V     | '0.0.1   '                |                                                |                | str  | csst_ms_mbi_instrument   |
|INST_TOL   | '2022-12-30T10:18:53'     | Time of last modification                      |                | str  | csst_ms_mbi_instrument   |
|DATASUM    | '1352015684'              | data unit checksum updated 2022-10-28T19:29:10 |                | str  | csst_ms_mbi_instrument   |

#### Header of `csst_ms_mbi_distortion`

| keyword   | value                     | comment                       | fallback_value | type | module                  |
|-----------|:--------------------------|-------------------------------|----------------|------|-------------------------|
| RADESYS   | 'ICRS    '                | should be always 'ICRS'       | 'ICRS'                | str  | csst_ms_mbi_distortion  |                             
| STAR_FIT  | 11                        |                               | 0                     | i8   | csst_ms_mbi_distortion  | 
| PV1_0     | 0.003205383944913964      |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV1_1     | 0.8673020820536499        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV1_2     | -0.2011989871377834       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV1_3     | -0.2597214229472611       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV1_4     | 0.4353828741811097        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV1_5     | -0.5054216569802673       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV1_6     | 0.1951474426617432        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV2_0     | 0.00109803885992697       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV2_1     | 0.9171065857705857        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV2_2     | -0.04908256792722099      |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV2_3     | -0.09860562038448289      |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV2_4     | 0.07961855240788976       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV2_5     | -0.2009224365497067       |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| PV2_6     | 0.1741954691884874        |                               | 0                     | f32  | csst_ms_mbi_distortion  |
| RA_OFF    | -0.0                      | mas in unit                   | -99                   | f32  | csst_ms_mbi_distortion  |
| DEC_OFF   | 0.0                       | mas in unit                   | -99                   | f32  | csst_ms_mbi_distortion  |
| RA_STD    | 127.1                     | mas in unit                   | -99                   | f32  | csst_ms_mbi_distortion  |
| DEC_STD   | 60.4                      | mas in unit                   | -99                   | f32  | csst_ms_mbi_distortion  |
| RA_CEN    | 192.1940713422841         | the center of detector in ra  | 192.1940713422841     | f32  | csst_ms_mbi_distortion  |
| DEC_CEN   | 26.72643742371229         | the center of detector in dec | 26.72643742371229     | f32  | csst_ms_mbi_distortion  |
| DIST_V    | '1.0     '                | version of distortion         | '1.0'                 | str  | csst_ms_mbi_distortion  |
| DIST_TOL  | '2022-12-29T16:36:47'     | distortion operation time     | '2022-12-29T16:36:47' | str  | csst_ms_mbi_distortion  |
| DIST_S    |                   0       | 0=done 1=wrong                | 1                     | i8   | csst_ms_mbi_distortion  | 

#### Header of `csst_ms_mbi_position`

| keyword   | value                     | comment                       | fallback_value | type | module                  |
|-----------|:--------------------------|-------------------------------|----------------|------|-------------------------|
| RADESYS   | 'ICRS    '                | should be always 'ICRS'       | 'ICRS'                | str  | csst_ms_mbi_position  |                             
| PV1_0     | -7.032303876526E-04       |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV1_1     | 9.986639936274E-01        |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV1_2     | -3.506141592607E-03       |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV1_4     | -2.342575913122E-03       |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV1_5     | -2.216829433925E-03       |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV1_6     | -5.122207406521E-03       |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV2_0     | -6.939462894407E-04       |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV2_1     | 9.988294486003E-01        |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV2_2     | -1.687802061938E-03       |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV2_4     | 1.561587727533E-03        |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV2_5     | -4.159618376671E-03       |                               | 0                     | f32  | csst_ms_mbi_position  |
| PV2_6     | 3.398895060382E-03        |                               | 0                     | f32  | csst_ms_mbi_position  |
| FGROUPNO  |                   1       | SCAMP field group label       |                       | i8   | csst_ms_mbi_position  |
| ASTIRMS1  | 0.000000000000E+00        | Astrom. dispersion RMS (intern., high S/N) |          | f32  | csst_ms_mbi_position  |    
| ASTIRMS2  | 0.000000000000E+00        | Astrom. dispersion RMS (intern., high S/N) |          | f32  | csst_ms_mbi_position  |
| ASTRRMS1  | 6.458653303335E-06        | Astrom. dispersion RMS (ref., high S/N)    |          | f32  | csst_ms_mbi_position  |
| ASTRRMS2  | 8.724734011714E-06        | Astrom. dispersion RMS (ref., high S/N)    |          | f32  | csst_ms_mbi_position  |       
| ASTINST   |                   1       | SCAMP astrometric instrument label         |          | i8   | csst_ms_mbi_position  |
| FLXSCALE  | 1.000000000000E+00        | SCAMP relative flux scale                  |          | f32  | csst_ms_mbi_position  |                     
| MAGZEROP  |          0.00000000       | SCAMP zero-point                           |          | f32  | csst_ms_mbi_position  |                               
| PHOTIRMS  |          0.00000000       | mag dispersion RMS (internal, high S/N)    |          | f32  | csst_ms_mbi_position  |
| PHOTINST  |                   1       | SCAMP photometric instrument label         |          | i8   | csst_ms_mbi_position  |
| PHOTLINK  |                   F       | True if linked to a photometric field      |          | bool | csst_ms_mbi_position  |
| WCS_S     |                   0       | 0=done                                     |          | i8   | csst_ms_mbi_position  | 
| WCS_V     | '2.0.4   '                | Version of WCS calibration                 |          | str  | csst_ms_mbi_position  |        
| WCS_P     | 'default.scamp'           | Configure file name of WCS                 |          | str  | csst_ms_mbi_position  |                    
| WCS_TOL   | '2022-12-30 18:32:46 PM'  | Time of last wcs calibration               |          | str  | csst_ms_mbi_position  |             

#### Header of `csst_ms_mbi_flux`

| keyword   | value                     | comment                       | fallback_value | type | module                  |
|-----------|:--------------------------|-------------------------------|----------------|------|-------------------------|
| CALI_REF  | 'GAIA    '                | the reference database for calibration        |     | str  | csst_ms_mbi_flux   |
| ZP        |             23.8435       | photometric zero point in magnitude           |     | f32  | csst_ms_mbi_flux   |
| ZPRMS     |             0.0101        | zpt rms of the matched objects                |     | f32  | csst_ms_mbi_flux   |                
| APER_R    |                 10        | (pixels) photo-aperture radius                |     | i8   | csst_ms_mbi_flux   |            
| FWHM      |                2.147      | FWHM in pixel                                 |     | f32  | csst_ms_mbi_flux   |
| RAOFF     |             -0.188        | median positional offset from GAIA, in arcsec |     | f32  | csst_ms_mbi_flux   |
| DECOFF    |            -0.1061        | median positional offset from GAIA, in arcsec |     | f32  | csst_ms_mbi_flux   | 
| NSTAR     |                 49        | total number of stars detected                |     | i8   | csst_ms_mbi_flux   | 
| NMATCH    |                 25        | total number of matched stars in 2 arcsec     |     | i8   | csst_ms_mbi_flux   |
| MDNCOL    |                0.0        | median (BP-RP)_GAIA of matched stars          |     | f32  | csst_ms_mbi_flux   |
| SKY       |             0.0359        | (e-/s per pixel)                              |     | f32  | csst_ms_mbi_flux   |                 
| SKYRMS    |             0.1766        | rms/pixel of the sky in unit of e-/s          |     | f32  | csst_ms_mbi_flux   | 
| MLIM      |              21.83        | magnitude limiting of 5-sigma galaxy detection|     | f32  | csst_ms_mbi_flux   | 
| FLUX_S    |                  0        | flux calibration status                       |     | i8   | csst_ms_mbi_flux   |                       
| FLUX_V    |  '1.3     '               | version of calibration code                   |     | str  | csst_ms_mbi_flux   |
| FLUX_TOL= |  '2022-12-30 18:36:05'    | flux calibration operation time               |     | str  | csst_ms_mbi_flux   |


## File: *_cat.fits

### File contents
| HDU  | data                    | note       |
|------|-------------------------|------------|
| HDU0 | None                    | PrimaryHDU |
| HDU1 | Table                   | ImageHDU   |

### HDU0

#### Header of photometry
| keyword   | value                     | comment                       | fallback_value | type | module                  |
|-----------|:--------------------------|-------------------------------|----------------|------|-------------------------|
| APERSIZE  | '3,4,5,6,8,10,13,16,20,25,30,40,' | aperture radii in pixels  |            | str  |  csst_ms_mbi_photometry |   
| NS_APER   |            75 | number of stars used in aperture correction   |            | i8   |  csst_ms_mbi_photometry | 
| APCOR0    | -0.06074262037873268 | mag correction for aperture #0         |            | f32  |  csst_ms_mbi_photometry |              
| APERR0    |                0.0   | mag correction error for aperture #0   |            | f32  |  csst_ms_mbi_photometry |
| APCOR1    | -0.01975813694298267 | mag correction for aperture #1         |            | f32  |  csst_ms_mbi_photometry |        
| APERR1    |                 0.0  | mag correction error for aperture #1   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR2    |                 0.0  | mag correction for aperture #2         |            | f32  |  csst_ms_mbi_photometry |        
| APERR2    |                 0.0  | mag correction error for aperture #2   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR3    | 0.01290098764002323  | mag correction for aperture #3         |            | f32  |  csst_ms_mbi_photometry |        
| APERR3    |                 0.0  | mag correction error for aperture #3   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR4    | 0.02804811112582684  | mag correction for aperture #4         |            | f32  |  csst_ms_mbi_photometry |        
| APERR4    |                 0.0  | mag correction error for aperture #4   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR5    | 0.03705496713519096  | mag correction for aperture #5         |            | f32  |  csst_ms_mbi_photometry |        
| APERR5    |                 0.0  | mag correction error for aperture #5   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR6    | 0.04462624341249466  | mag correction for aperture #6         |            | f32  |  csst_ms_mbi_photometry |        
| APERR6    |                 0.0  | mag correction error for aperture #6   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR7    | 0.05059236660599709  | mag correction for aperture #7         |            | f32  |  csst_ms_mbi_photometry |            
| APERR7    |                 0.0  | mag correction error for aperture #7   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR8    |  0.05710481852293015 | mag correction for aperture #8         |            | f32  |  csst_ms_mbi_photometry |        
| APERR8    |                  0.0 | mag correction error for aperture #8   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR9    |  0.06682745367288589 | mag correction for aperture #9         |            | f32  |  csst_ms_mbi_photometry |        
| APERR9    |                  0.0 | mag correction error for aperture #9   |            | f32  |  csst_ms_mbi_photometry |        
| APCOR10   |  0.07620415091514587 | mag correction for aperture #10        |            | f32  |  csst_ms_mbi_photometry |        
| APERR10   |                  0.0 | mag correction error for aperture #10  |            | f32  |  csst_ms_mbi_photometry |        
| APCOR11   |   0.0952027440071106 | mag correction for aperture #11        |            | f32  |  csst_ms_mbi_photometry |        
| APERR11   |                  0.0 | mag correction error for aperture #11  |            | f32  |  csst_ms_mbi_photometry |        
| HIERARCH ns_HYBRID | 328 |number of stars used in HYBRID correction       |            | i8   |  csst_ms_mbi_photometry |          
| HYBCOR    |  0.0498337559401989  | mag correction for HYBRID              |            | f32  |  csst_ms_mbi_photometry |        
| HYBERR    | 0.000711286964798456 | mag correction error                   |            | f32  |  csst_ms_mbi_photometry |        
| NS_PSF    |                  306 | number of stars used in PSF correction |            | i8   |  csst_ms_mbi_photometry |        
| PSFCOR    | -0.00268870708532631 | mag correction for PSF                 |            | f32  |  csst_ms_mbi_photometry |        
| PSFERR    | 0.000903990056504255 | mag correction error                   |            | f32  |  csst_ms_mbi_photometry |        
| NS_MODEL  |                  324 | number of stars used in MODEL correction|            | i8  |  csst_ms_mbi_photometry |       
| MODCOR    |  0.04189466685056686 | mag correction for MODEL               |            | f32  |  csst_ms_mbi_photometry |        
| MODERR    |  0.000894258863834524| mag correction error                   |            | f32  |  csst_ms_mbi_photometry |        

### HDU1

#### Header

## File: *_psf.fits

### File contents

| HDU  | data                    | note       |
|------|-------------------------|------------|
| HDU0 | None                    | PrimaryHDU |
| HDU1 | Table                   | ImageHDU   |

### HDU0

#### Header

| keyword | value | comment       | fallback_value | type | module           |
|---------|:------|---------------|----------------|------|------------------|
| SIMPLE  | True  | Fits standard | True           | bool | csst_ooc_psf_mbi |  

### HDU1

#### Header of `csst_ooc_psf_mbi`

| keyword  | value        | comment                                       | fallback_value | type | module           |
| -------- |:------------ | --------------------------------------------- | -------------- | ---- | ---------------- |
| LOADED   | 579          | Number of loaded sources                      |                | I8   | csst_ooc_psf_mbi |
| ACCEPTED | 573          | Number of accepted sources                    |                | I8   | csst_ooc_psf_mbi |
| CHI2     | 1.12832649   | Final reduced chi2                            |                | f32  | csst_ooc_psf_mbi |
| POLNAXIS | 2            | Number of context parameters                  |                | I8   | csst_ooc_psf_mbi |
| POLGRP1  | 1            | Polynom group for this context parameter      |                | I8   | csst_ooc_psf_mbi |
| POLNAME1 | 'XWIN_IMAGE' | Name of this context parameter                |                | Str  | csst_ooc_psf_mbi |
| POLZERO1 | 4607.403434  | Offset value for this context parameter       |                | f32  | csst_ooc_psf_mbi |
| POLSCAL1 | 9161.359825  | Scale value for this context parameter        |                | f32  | csst_ooc_psf_mbi |
| POLGRP2  | 1            | Polynom group for this context parameter      |                | I8   | csst_ooc_psf_mbi |
| POLNAME2 | 'YWIN_IMAGE' | Name of this context parameter                |                | Str  | csst_ooc_psf_mbi |
| POLZERO2 | 4631.62895   | Offset value for this context parameter       |                | f32  | csst_ooc_psf_mbi |
| POLSCAL2 | 9174.347872  | Scale value for this context parameter        |                | f32  | csst_ooc_psf_mbi |
| POLNGRP  | 1            | Number of context groups                      |                | I8   | csst_ooc_psf_mbi |
| POLDEG1  | 2            | Polynom degree for this context group         |                | I8   | csst_ooc_psf_mbi |
| PSF_FWHM | 2.31607056   | PSF FWHM in image pixels                      |                | f32  | csst_ooc_psf_mbi |
| PSF_SAMP | 0.49278098   | Sampling step of the PSF data in image pixels |                | f32  | csst_ooc_psf_mbi |
| PSFNAXIS | 3            | Dimensionality of the PSF data                |                | I8   | csst_ooc_psf_mbi |
| PSFAXIS1 | 71           | Number of element along this axis             |                | I8   | csst_ooc_psf_mbi |
| PSFAXIS2 | 71           | Number of element along this axis             |                | I8   | csst_ooc_psf_mbi |
| PSFAXIS3 | 6            | Number of element along this axis             |                | I8   | csst_ooc_psf_mbi |

#### Header of `csst_ooc_psf_strategy_crds`

| keyword   | value                 | comment                                                                                                                                | fallback_value | type | module                     |
| --------- | --------------------- | -------------------------------------------------------------------------------------------------------------------------------------- | -------------- | ---- | -------------------------- |
| USEAFTER  | '2028-07-22T18:52:33' | date and time after the reference files will be used. (YYYY-MM-DDThh:mm:ss)                                                            |                | str  | csst_ooc_psf_strategy_crds |
| OBSSTART  | '2028-07-22T18:52:33' | UTC date and time of start of first observation (YYYY-MM-DDThh:mm:ss)                                                                  |                | str  | csst_ooc_psf_strategy_crds |
| OBSEND    | '2028-07-23T17:54:27' | UTC date and time of end of last observation (YYYY-MM-DDThh:mm:ss)                                                                     |                | str  | csst_ooc_psf_strategy_crds |
| EXPTYPE   | 'SCI'                 | type of exposes used to create the reference file ('SCI'or 'OOC')                                                                      |                | str  | csst_ooc_psf_strategy_crds |
| COMBINE_N | 135                   | number of exposes used to create the reference file.                                                                                   |                | I8   | csst_ooc_psf_strategy_crds |
| BREAPHAS  | 'hot'                 | phase of breathing effect, which is the focus varies over orbital time <br> scales due to thermal changes. ('hot', 'cold'. 'none')     |                | str  | csst_ooc_psf_strategy_crds |
| TEMP_PM   | 20.72563452           | average temperature surrounding the primary mirror (in K)                                                                              |                | f32  | csst_ooc_psf_strategy_crds |
| TEMP_SM   | 20.72563452           | average temperature surrounding the secondary mirror (in K)                                                                            |                | f32  | csst_ooc_psf_strategy_crds |
| TEMP_TM   | 20.72563452           | average temperature surrounding the tertiary mirror (in K)                                                                             |                | f32  | csst_ooc_psf_strategy_crds |
| LFOCUST   | '2028-07-22T18:52:33' | last focus (AM1 or AM2) time (YYYY-MM-DDThh:mm:ss)                                                                                     |                | str  | csst_ooc_psf_strategy_crds |
| P1_FOCUS  | 28025.63452           | parameter 1 of focal length calculated from the positions ofthe focus <br> adjustment mechanism (FAM) and the secondary mirror (in mm) |                | f32  | csst_ooc_psf_strategy_crds |
| P2_ FOCUS | 28025.63452           | parameter 2 of focal length (in mm)                                                                                                    |                | f32  | csst_ooc_psf_strategy_crds |
| P3_ FOCUS | 28025.63452           | parameter 3 of focal length (in mm)                                                                                                    |                | f32  | csst_ooc_psf_strategy_crds |
| P4_ FOCUS | 28025.63452           | parameter 4 of focal length (in mm)                                                                                                    |                | f32  | csst_ooc_psf_strategy_crds |
| P5_ FOCUS | 28025.63452           | parameter 5 of focal length (in mm)                                                                                                    |                | f32  | csst_ooc_psf_strategy_crds |
| P6_ FOCUS | 28025.63452           | parameter 6 of focal length (in mm)                                                                                                    |                | f32  | csst_ooc_psf_strategy_crds |
| FSM_STAT  | T                     | working state of fast-steering mirror (FSM)                                                                                            |                | bool | csst_ooc_psf_strategy_crds |