def init_db(config, verbose=False):
"""
Initialize db if necessary: create the sole non-admin user
"""
client = pymongo.MongoClient(
host=config["sentinel"]["database"]["host"],
port=config["sentinel"]["database"]["port"],
username=config["sentinel"]["database"]["admin_username"],
password=config["sentinel"]["database"]["admin_password"],
)
# _id: db_name.user_name
user_ids = []
for _u in client.admin.system.users.find({}, {"_id": 1}):
user_ids.append(_u["_id"])
db_name = config["sentinel"]["database"]["db"]
username = config["sentinel"]["database"]["username"]
_mongo = client[db_name]
if f"{db_name}.{username}" not in user_ids:
_mongo.command(
"createUser",
config["sentinel"]["database"]["username"],
pwd=config["sentinel"]["database"]["password"],
roles=["readWrite"],
)
if verbose:
log("Successfully initialized db")
_mongo.client.close()
def update_one(
self,
collection: str,
filt: dict,
update: dict,
transaction: bool = False,
**kwargs,
):
upsert = kwargs.get("upsert", True)
try:
if transaction:
with self.client.start_session() as session:
with session.start_transaction():
self.db[collection].update_one(
filter=filt,
update=update,
upsert=upsert,
session=session,
)
else:
self.db[collection].update_one(filter=filt,
update=update,
upsert=upsert)
except Exception as e:
if self.verbose:
log(f"Error inserting document into collection {collection}: {str(e)}"
)
err = traceback.format_exc()
log(err)
def post_candidate(self, oid: str, detection: Mapping):
"""
Post a candidate comet detection to Fritz
:param oid: candidate id
:param detection: from self.process_frame
:return:
"""
candid = f"{detection['id']}_{detection['ni']}"
meta = {
"id": oid,
"ra": detection["ra"],
"dec": detection["dec"],
"score": detection["p"],
"filter_ids": [self.config["sentinel"]["fritz"]["filter_id"]],
"origin": candid,
"passed_at": arrow.utcnow().format("YYYY-MM-DDTHH:mm:ss.SSS"),
}
if self.verbose > 1:
log(meta)
with timer(
f"Posting metadata of {oid} {candid} to Fritz",
self.verbose > 1,
):
response = self.api_fritz("POST", "/api/candidates", meta)
if response.json()["status"] == "success":
log(f"Posted {oid} {candid} metadata to Fritz")
else:
log(f"Failed to post {oid} {candid} metadata to Fritz")
log(response.json())
def insert_many(self,
collection: str,
documents: list,
transaction: bool = False,
**kwargs):
ordered = kwargs.get("ordered", False)
try:
if transaction:
with self.client.start_session() as session:
with session.start_transaction():
self.db[collection].insert_many(documents,
ordered=ordered,
session=session)
else:
self.db[collection].insert_many(documents, ordered=ordered)
except BulkWriteError as bwe:
if self.verbose:
log(f"Error inserting documents into collection {collection}: {str(bwe.details)}"
)
err = traceback.format_exc()
log(err)
except Exception as e:
if self.verbose:
log(f"Error inserting documents into collection {collection}: {str(e)}"
)
err = traceback.format_exc()
log(err)
def fetch_data(name_secrets_path: Sequence):
"""Fetch data for a ZTF observation
:param name_secrets_path: stacked into Sequence to use with mp.pool.imap
:return:
"""
try:
name, secrets, p_base = name_secrets_path
path_base = (p_base / "data").resolve()
# Instantiating Troika will fetch all the relevant data: SCI, REF, and DIFF images from IPAC
Troika(
path_base=str(path_base),
name=name,
secrets=secrets,
verbose=False,
fetch_data_only=True,
)
except Exception as e:
log(e)
def insert_one(self,
collection: str,
document: dict,
transaction: bool = False,
**kwargs):
# note to future me: single-document operations in MongoDB are atomic
# turn on transactions only if running a replica set
try:
if transaction:
with self.client.start_session() as session:
with session.start_transaction():
self.db[collection].insert_one(document,
session=session)
else:
self.db[collection].insert_one(document)
except Exception as e:
if self.verbose:
log(f"Error inserting document into collection {collection}: {str(e)}"
)
err = traceback.format_exc()
log(err)
def post_thumbnails(self, oid: str, detection: Mapping):
"""
Post Fritz-style (~1'x1') cutout images centered around the detected candidate to Fritz
:param oid: Fritz obj id
:param detection: Tails detection dict
:return:
"""
candid = f"{detection['id']}_{detection['ni']}"
for thumbnail_type in ("new", "ref", "sub"):
with timer(
f"Making {thumbnail_type} thumbnail for {oid} {candid}",
self.verbose > 1,
):
thumb = self.make_thumbnail(oid, detection, thumbnail_type)
with timer(
f"Posting {thumbnail_type} thumbnail for {oid} {candid} to Fritz",
self.verbose > 1,
):
response = self.api_fritz("POST", "/api/thumbnail", thumb)
if response.json()["status"] == "success":
log(f"Posted {oid} {candid} {thumbnail_type} cutout to Fritz")
else:
log(f"Failed to post {oid} {candid} {thumbnail_type} cutout to Fritz"
)
log(response.json())
def test_run_tails(self):
run_tails.run(
cleanup="all",
checkpoint="../models/tails-20210107/tails",
config="../config.defaults.yaml",
score_threshold=0.7,
single_image="ztf_20191014495961_000570_zr_c05_o_q3",
)
# The image is tessellated into 169 tiles, and on one of the them, the comet should be detected,
# which produces 3 files -- this is what we are checking here:
assert (len(
list(
pathlib.Path("./runs/20191014").glob(
"ztf_20191014495961_000570_zr_c05_o_q3*"))) == 3)
# check the prediction:
df = pd.read_csv(
"./runs/20191014/ztf_20191014495961_000570_zr_c05_o_q3.csv")
log(df)
# check the score and the predicted image plane position
score = df.p.values[0]
log(f"Predicted score: {score}")
x_comet, y_comet = 558, 2639 # approximate position [pix]
x, y = df.x.values[0], df.y.values[0]
# call a prediction within 5 pix a success
offset = math.sqrt((x - x_comet)**2 + (y - y_comet)**2)
log(f"Predicted offset from the apriori position: {offset:.2f} pix")
assert score > 0.9
assert offset < 5
def process_frame(frame: str):
"""
Function that is executed on dask.distributed.Worker's to process a ZTF observation
:param frame: ZTF frame id formatted as in ztf_20201114547512_000319_zr_c01_o_q1, where
20201114: date string
547512: time tag
000319: zero-padded field id
zr: filter code <zg|zr|zi>
c01: zero-padded CCD id c [1, 16]
q1: quadrant id c [1, 4]
:return:
"""
# get worker running current task
worker = dask.distributed.get_worker()
tails_worker = worker.plugins["worker-init"].tails_worker
log(f"Processing {frame} on {worker.address}")
collection = config["sentinel"]["database"]["collection"]
try:
# process frame, tessellate, run Tails on individual tiles
results = tails_worker.process_frame(frame)
# post results to Fritz, if any
if results["status"] == "success":
if config["sentinel"]["app"]["post_to_fritz"]:
tails_worker.post_detections_to_fritz(results["detections"])
tails_worker.mongo.db[collection].update_one(
{"_id": frame}, {"$set": {
"status": "success"
}}, upsert=True)
else:
log(f"Processing of {frame} failed")
tails_worker.mongo.db[collection].update_one(
{"_id": frame}, {"$set": {
"status": "error"
}}, upsert=True)
except Exception as e:
log(e)
tails_worker.mongo.db[collection].update_one(
{"_id": frame}, {"$set": {
"status": "error"
}}, upsert=True)
def __init__(self, **kwargs):
self.verbose = kwargs.get("verbose", 2)
self.config = config
# mongo connection
self.mongo = Mongo(
host=config["sentinel"]["database"]["host"],
port=config["sentinel"]["database"]["port"],
username=config["sentinel"]["database"]["username"],
password=config["sentinel"]["database"]["password"],
db=config["sentinel"]["database"]["db"],
verbose=self.verbose,
)
# requests.Session to talk to Fritz
self.session = requests.Session()
self.session_headers = {
"Authorization": f"token {config['sentinel']['fritz']['token']}"
}
retries = Retry(
total=5,
backoff_factor=2,
status_forcelist=[405, 429, 500, 502, 503, 504],
method_whitelist=["HEAD", "GET", "PUT", "POST", "PATCH"],
)
adapter = TimeoutHTTPAdapter(timeout=5, max_retries=retries)
self.session.mount("https://", adapter)
self.session.mount("http://", adapter)
# init MPC and SkyBot - services used for cross-matching identified candidates with known Solar system objects
self.mpc = MPC(verbose=self.verbose)
self.imcce = IMCCE(verbose=self.verbose)
# check Fritz connection
try:
with timer("Checking connection to Fritz", self.verbose > 1):
response = self.api_fritz("GET", "/api/sysinfo")
if response.json()["status"] == "success":
log("Fritz connection OK")
else:
log("Failed to connect to Fritz")
raise ValueError("Failed to connect to Fritz")
except Exception as e:
log(e)
# load Tails
self.path = pathlib.Path(config["sentinel"]["app"]["path"])
self.checkpoint = f"/app/models/{config['sentinel']['app']['checkpoint']}/tails"
self.model = Tails()
self.model.load_weights(self.checkpoint).expect_partial()
self.score_threshold = float(config["sentinel"]["app"].get(
"score_threshold", 0.5))
if not (0 <= self.score_threshold <= 1):
raise ValueError(
"sentinel.app.score_threshold must be (0 <= score_threshold <=1), check config"
)
self.cleanup = config["sentinel"]["app"]["cleanup"]
if self.cleanup not in ("all", "none", "ref", "sci"):
raise ValueError(
"sentinel.app.cleanup value not in ('all', 'none', 'ref', 'sci'), check config"
)
self.num_threads = mp.cpu_count()
def post_comments(self, oid: str, detection: Mapping):
"""
Post auxiliary candidate info to Fritz as comments to the respective object
:param oid: Fritz obj id
:param detection: Tails detection dict
:return:
"""
candid = f"{detection['id']}_{detection['ni']}"
# post full-sized cutouts
date_string = detection["id"].split("_")[1][:8]
path_date = self.path / "runs" / date_string
with open(str(path_date / f"{candid}.png"), "rb") as f:
file_content = f.read()
cutouts_png = base64.b64encode(file_content).decode("utf-8")
comment = {
"text": "Full-sized cutouts (256x256 px)",
"group_ids": [self.config["sentinel"]["fritz"]["group_id"]],
"attachment": {
"body": cutouts_png,
"name": f"{candid}.png",
},
}
response = self.api_fritz("POST", f"/api/sources/{oid}/comments",
comment)
if response.json()["status"] == "success":
log(f"Posted {oid} {candid} png to Fritz")
else:
log(f"Failed to post {oid} {candid} png to Fritz")
log(response.json())
# post cross-matches from MPC and IMCCE
cross_matches = {"MPC": None, "IMCCE": None}
if (detection["x_match_mpc"]["status"] == "success"
and len(detection["x_match_mpc"]["data"]) > 0):
cross_matches["MPC"] = detection["x_match_mpc"]["data"]
if (detection["x_match_skybot"]["status"] == "success"
and len(detection["x_match_skybot"]["data"]) > 0):
cross_matches["IMCCE"] = (
detection["x_match_skybot"]["data"].to_pandas(
index=False, use_nullable_int=False).fillna(
value="null").to_dict(orient="records"))
comment = {
"text": "MPC and IMCCE cross-match",
"group_ids": [self.config["sentinel"]["fritz"]["group_id"]],
"attachment": {
"body":
base64.b64encode(
json.dumps(cross_matches).encode()).decode("utf-8"),
"name":
f"{candid}.json",
},
}
response = self.api_fritz("POST", f"/api/sources/{oid}/comments",
comment)
if response.json()["status"] == "success":
log(f"Posted {oid} {candid} cross-matches to Fritz")
else:
log(f"Failed to post {oid} {candid} cross-matches to Fritz")
log(response.json())
# post SCI image URL on IPAC's IRSA
comment = {
"text": f"[SCI image from IPAC]({detection['sci_ipac_url']})",
"group_ids": [self.config["sentinel"]["fritz"]["group_id"]],
}
response = self.api_fritz("POST", f"/api/sources/{oid}/comments",
comment)
if response.json()["status"] == "success":
log(f"Posted {oid} {candid} sci image url to Fritz")
else:
log(f"Failed to post {oid} {candid} sci image url to Fritz")
log(response.json())
def post_annotations(self, oid: str, detection: Mapping):
"""
Post candidate annotations to Fritz
:param oid: candidate id
:param detection: from self.process_frame
:return:
"""
candid = f"{detection['id']}_{detection['ni']}"
data = {
"candid": candid,
"score": detection["p"],
"jd": detection["jd"],
"datestr": detection["datestr"],
"x": detection["x"],
"y": detection["y"],
"ra": detection["ra"],
"dec": detection["dec"],
"radecstr": detection["radecstr"],
"tails_v": self.config["sentinel"]["app"]["checkpoint"],
"sci_ipac_url": detection["sci_ipac_url"],
"dif_ipac_url": detection["dif_ipac_url"],
}
if (detection["x_match_mpc"]["status"] == "success"
and len(detection["x_match_mpc"]["data"]) > 0):
nearest_match = detection["x_match_mpc"]["data"][0]
data["mpc_nearest_id"] = nearest_match.get("designation")
data["mpc_nearest_offset_arcsec"] = nearest_match.get(
"offset__arcsec")
data["mpc_nearest_orbit"] = nearest_match.get("orbit")
if (detection["x_match_skybot"]["status"] == "success"
and len(detection["x_match_skybot"]["data"]) > 0):
nearest_match = detection["x_match_skybot"]["data"][0]
data["imcce_nearest_id"] = str(nearest_match["Name"])
data["imcce_nearest_offset_arcsec"] = float(
nearest_match["centerdist"].value)
data["imcce_nearest_Vmag"] = float(nearest_match["V"].value)
annotations = {
"origin": "tails:twilight",
"data": data,
"group_ids": [self.config["sentinel"]["fritz"]["group_id"]],
}
if self.verbose:
log(annotations)
with timer(
f"Posting annotations for {oid} {candid} to Fritz",
self.verbose > 1,
):
response = self.api_fritz("POST",
f"/api/sources/{oid}/annotations",
annotations)
if response.json()["status"] == "success":
log(f"Posted {oid} {candid} annotation to Fritz")
else:
log(f"Failed to post {oid} {candid} annotation to Fritz")
log(response.json())
def process_frame(self, frame: str) -> Mapping[str, Union[Sequence, str]]:
"""
Process a ZTF observation
- Fetch the epochal science, reference, and difference image for a ZTF observation
- Re-project the reference image onto the epochal science image
- Stack all three together
- Tessellate into a 13x13 grid of overlapping tiles of size 256x256 pix
- Execute Tails on each tile
- For each candidate detection, query MPC and IMCCE for cross-matches with known SS objects
:param frame: ZTF frame id formatted as in ztf_20201114547512_000319_zr_c01_o_q1, where
20201114: date string
547512: time tag
000319: zero-padded field id
zr: filter code <zg|zr|zi>
c01: zero-padded CCD id c [1, 16]
q1: quadrant id c [1, 4]
:return: detections (if any), packed into the result dict
"""
path_base = self.path.resolve()
date_string = frame.split("_")[1][:8]
path_date = self.path / "runs" / date_string
if not path_date.exists():
path_date.mkdir(parents=True, exist_ok=True)
results = {"detections": [], "status": "success"}
try:
box_size_pix = config["sentinel"]["app"]["box_size_pix"]
dim_last = self.model.inputs[0].shape[-1]
if dim_last == 2:
stack_class = Dvoika
elif dim_last == 3:
stack_class = Troika
else:
raise ValueError(
"bad dim_last: only know how to operate on duplets and triplets"
)
with timer("Making stack", self.verbose > 1):
stack = stack_class(
path_base=str(path_base),
name=frame,
secrets=self.config,
verbose=self.verbose,
)
# re-project ref
with timer("Re-projecting", self.verbose > 1):
ref_projected = stack.reproject_ref2sci(
how="swarp", nthreads=self.num_threads)
# tessellate
with timer("Tessellating", self.verbose > 1):
xboxes, yboxes = stack.tessellate_boxes(
box_size_pix=box_size_pix, offset=20)
tessellation = []
with timer("Preprocessing tiles", self.verbose > 1):
for i, xbox in enumerate(xboxes):
for j, ybox in enumerate(yboxes):
# stack and preprocess image stack
if dim_last == 2:
s = np.stack(
[
stack.sci[xbox[0]:xbox[1],
ybox[0]:ybox[1]],
ref_projected[xbox[0]:xbox[1],
ybox[0]:ybox[1]],
],
axis=2,
)
elif dim_last == 3:
s = np.stack(
[
stack.sci[xbox[0]:xbox[1],
ybox[0]:ybox[1]],
ref_projected[xbox[0]:xbox[1],
ybox[0]:ybox[1]],
stack.zogy[xbox[0]:xbox[1],
ybox[0]:ybox[1]],
],
axis=2,
)
else:
raise ValueError(
"bad dim_last: only know how to operate on duplets and triplets"
)
s_raw = deepcopy(s)
preprocess_stack(s)
tessellation.append({
"i": i,
"j": j,
"xbox": xbox,
"ybox": ybox,
"stack": s,
"stack_raw": s_raw,
})
stacks = np.array([t["stack"] for t in tessellation])
with timer("Running Tails", self.verbose > 1):
predictions = self.model.predict(stacks, )
# log(predictions[0], predictions.shape)
# URL to fetch original images from IPAC
sci_name = stack.name + "_sciimg.fits"
tmp = sci_name.split("_")[1]
y, p1, p2 = tmp[:4], tmp[4:8], tmp[8:]
sci_ipac_url = os.path.join(config["irsa"]["url"], "sci", y, p1,
p2, sci_name)
# detections
ind = np.where(
predictions[:, 0].flatten() > self.score_threshold)[0]
for ni, ii in enumerate(ind):
x_o, y_o = predictions[ii, 1:] * stacks.shape[1]
# save png
with timer("Saving png", self.verbose > 1):
plot_stack(
# tessellation[ii]['stack'],
tessellation[ii]["stack_raw"],
reticles=((x_o, y_o), ),
w=6,
h=2,
dpi=360,
save=str(path_date / f"{frame}_{ni}.png"),
# cmap=cmr.arctic,
# cmap=plt.cm.viridis,
# cmap=plt.cm.cividis,
cmap="bone",
)
# save npy:
with timer("Saving npy", self.verbose > 1):
np.save(str(path_date / f"{frame}_{ni}.npy"),
tessellation[ii]["stack"])
x, y = (
tessellation[ii]["ybox"][0] + x_o,
tessellation[ii]["xbox"][0] + y_o,
)
ra, dec = stack.pix2world_sci(x, y)
sky_coord = SkyCoord(ra=ra, dec=dec, unit="deg")
radecstr = sky_coord.to_string(style="hmsdms")
epoch = Time(stack.header_sci["OBSJD"], format="jd")
jd = float(epoch.jd)
dt = epoch.datetime
# make cutouts for posting to Fritz
with timer("Making cutouts", self.verbose > 1):
cutout_xbox, cutout_ybox, _, _ = stack.make_box(
ra=ra,
dec=dec,
box_size_pix=63,
min_offset=0,
random=False)
if self.verbose:
log((cutout_xbox, cutout_ybox))
cutouts = np.stack(
[
stack.sci[cutout_ybox[0]:cutout_ybox[1],
cutout_xbox[0]:cutout_xbox[1], ],
ref_projected[cutout_ybox[0]:cutout_ybox[1],
cutout_xbox[0]:cutout_xbox[1], ],
stack.zogy[cutout_ybox[0]:cutout_ybox[1],
cutout_xbox[0]:cutout_xbox[1], ],
],
axis=2,
)
# query MPC and SkyBot
x_match_query = {
"id": f"{frame}_{ni}",
"position": sky_coord,
"radius": 2,
"epoch": epoch,
"timeout": 30,
}
with timer("Querying MPC", self.verbose > 1):
x_match_mpc = self.mpc.query(query=x_match_query)
with timer("Querying IMCCE", self.verbose > 1):
x_match_skybot = self.imcce.query(query=x_match_query)
if self.verbose:
log(x_match_mpc)
log(x_match_skybot)
detection = {
"id":
frame,
"ni":
ni,
"jd":
jd,
"datestr":
f"{dt.year} {dt.month} {dt.day + (dt.hour + dt.minute / 60 + dt.second / 3600) / 24}",
"p":
float(predictions[ii, 0]),
"x":
x,
"y":
y,
"ra":
ra,
"dec":
dec,
"radecstr":
radecstr,
"tails_v":
self.config["sentinel"]["app"]["checkpoint"],
"sci_ipac_url":
sci_ipac_url,
"dif_ipac_url":
sci_ipac_url.replace("sciimg.fits",
"scimrefdiffimg.fits.fz"),
"cutouts":
cutouts,
"x_match_mpc":
x_match_mpc,
"x_match_skybot":
x_match_skybot,
}
results["detections"].append(detection)
if len(results["detections"]) > 0:
df_dets = pd.DataFrame.from_records(results["detections"])
df_dets.to_csv(str(path_date / f"{frame}.csv"), index=False)
if self.cleanup.lower() != "none":
cleanup_ref = True if self.cleanup.lower() in (
"all", "ref") else False
cleanup_sci = True if self.cleanup.lower() in (
"all", "sci") else False
stack.cleanup(ref=cleanup_ref, sci=cleanup_sci)
except Exception as e:
log(e)
results["status"] = "error"
return results
from dask.distributed import LocalCluster
import time
from tails.utils import load_config, log
""" load config and secrets """
config = load_config(config_file="./config.yaml")
if __name__ == "__main__":
cluster = LocalCluster(
threads_per_worker=config["sentinel"]["dask"]["threads_per_worker"],
n_workers=config["sentinel"]["dask"]["n_workers"],
scheduler_port=config["sentinel"]["dask"]["scheduler_port"],
lifetime=config["sentinel"]["dask"]["lifetime"],
lifetime_stagger=config["sentinel"]["dask"]["lifetime_stagger"],
lifetime_restart=config["sentinel"]["dask"]["lifetime_restart"],
)
log(cluster)
while True:
time.sleep(60)
log("Heartbeat")
def timer(task_description, verbose: bool = True):
tic = time.time()
yield
toc = time.time()
if verbose:
log(f"{task_description} took {toc-tic} s")
def sentinel(
utc_start: Optional[str] = None,
utc_stop: Optional[str] = None,
twilight: Optional[bool] = False,
test: Optional[bool] = False,
verbose: Optional[bool] = False,
):
"""
ZTF Sentinel service
- Monitors the ZTF_ops collection on Kowalski for new ZTF data (Twilight only by default).
- Uses dask.distributed to process individual ZTF image frames (ccd-quads).
Each worker is initialized with a TailsWorker instance that maintains a Fritz connection and preloads Tails.
The candidate comet detections, if any, are posted to Fritz together with auto-annotations
(cross-matches from the MPC and SkyBot) and auxiliary data.
:param utc_start: UTC start date/time in arrow-parsable format. If not set, defaults to (now - 1h)
:param utc_stop: UTC stop date/time in arrow-parsable format. If not set, defaults to (now + 1h).
If set, program runs once
:param twilight: process only the data of the ZTF Twilight survey
:param test: run in test mode
:param verbose: verbose?
:return:
"""
if verbose:
log("Setting up MongoDB connection")
init_db(config=config, verbose=verbose)
mongo = Mongo(
host=config["sentinel"]["database"]["host"],
port=config["sentinel"]["database"]["port"],
username=config["sentinel"]["database"]["username"],
password=config["sentinel"]["database"]["password"],
db=config["sentinel"]["database"]["db"],
verbose=verbose,
)
if verbose:
log("Set up MongoDB connection")
collection = config["sentinel"]["database"]["collection"]
# remove dangling entries in the db at startup
mongo.db[collection].delete_many({"status": "processing"})
# Configure dask client
if verbose:
log("Initializing dask.distributed client")
dask_client = dask.distributed.Client(
address=
f"{config['sentinel']['dask']['host']}:{config['sentinel']['dask']['scheduler_port']}"
)
# init each worker with Worker instance
if verbose:
log("Initializing dask.distributed workers")
worker_initializer = WorkerInitializer()
dask_client.register_worker_plugin(worker_initializer, name="worker-init")
if test:
frame = "ztf_20191014495961_000570_zr_c05_o_q3"
with timer(f"Submitting frame {frame} for processing", verbose):
mongo.db[collection].update_one({"_id": frame},
{"$set": {
"status": "processing"
}},
upsert=True)
future = dask_client.submit(process_frame, frame, pure=True)
dask.distributed.fire_and_forget(future)
future.release()
del future
return True
if verbose:
log("Setting up Kowalski connection")
kowalski = Kowalski(
token=config["kowalski"]["token"],
protocol=config["kowalski"]["protocol"],
host=config["kowalski"]["host"],
port=config["kowalski"]["port"],
verbose=verbose,
)
if verbose:
log(f"Kowalski connection OK: {kowalski.ping()}")
while True:
try:
# monitor the past 24 hours as sometimes there are data processing/posting delays at IPAC
start = (arrow.get(utc_start) if utc_start is not None else
arrow.utcnow().shift(hours=-24))
stop = (arrow.get(utc_stop)
if utc_stop is not None else arrow.utcnow().shift(hours=1))
if (stop - start).total_seconds() < 0:
raise ValueError("utc_stop must be greater than utc_start")
if verbose:
log(f"Looking for ZTF exposures between {start} and {stop}")
kowalski_query = {
"query_type": "find",
"query": {
"catalog": "ZTF_ops",
"filter": {
"jd_start": {
"$gt": Time(start.datetime).jd,
"$lt": Time(stop.datetime).jd,
}
},
"projection": {
"_id": 0,
"fileroot": 1
},
},
}
if twilight:
kowalski_query["query"]["filter"]["qcomment"] = {
"$regex": "Twilight"
}
response = kowalski.query(query=kowalski_query).get("data", dict())
file_roots = sorted([entry["fileroot"] for entry in response])
frame_names = [
f"{file_root}_c{ccd:02d}_o_q{quad:1d}"
for file_root in file_roots for ccd in range(1, 17)
for quad in range(1, 5)
]
if verbose:
log(f"Found {len(frame_names)} ccd-quad frames")
log(frame_names)
processed_frames = [
frame["_id"] for frame in mongo.db[collection].find(
{
"_id": {
"$in": frame_names
},
"status": {
"$in": ["processing", "success"]
},
},
{"_id": 1},
)
]
if verbose:
log(processed_frames)
unprocessed_frames = set(frame_names) - set(processed_frames)
for frame in unprocessed_frames:
with timer(f"Submitting frame {frame} for processing",
verbose):
mongo.db[collection].update_one(
{"_id": frame}, {"$set": {
"status": "processing"
}},
upsert=True)
future = dask_client.submit(process_frame,
frame,
pure=True)
dask.distributed.fire_and_forget(future)
future.release()
del future
except Exception as e:
log(e)
# run once if utc_stop is set
if utc_stop is not None:
break
else:
log("Heartbeat")
time.sleep(60)
def process_ccd_quad(
name: str,
p_date: pathlib.Path,
model,
checkpoint: str = "../models/tails-20210107/tails",
config: Mapping = None,
nthreads: int = N_CPU,
score_threshold: float = 0.6,
cleanup: str = "none",
) -> bool:
"""Process a ZTF observation
:param name: ZTF observation id in format ztf_20200810193681_000635_zr_c09_o_q2
:param p_date: base output path
:param checkpoint: Pre-trained model weights
:param model: tf.keras.models.Model
:param config: config dict
:param nthreads: Number of threads for image re-projecting
:param score_threshold: score threshold for declaring a candidate plausible (0 <= score_threshold <= 1)
:param cleanup: Delete raw data: ref|sci|all|none
:return:
"""
# init Troika and fetch image data from IPAC or, if available, NERSC
try:
box_size_pix = 256
n_c = model.inputs[0].shape[-1]
if n_c == 2:
stack_class = Dvoika
elif n_c == 3:
stack_class = Troika
else:
raise ValueError(
"bad n_c: only know how to operate on duplets and triplets"
)
path_base = pathlib.Path("./data").resolve()
stack = stack_class(
path_base=str(path_base), name=name, secrets=config, verbose=False
)
# reproject ref
ref_projected = stack.reproject_ref2sci(how="swarp", nthreads=nthreads)
# tessellate
xboxes, yboxes = stack.tessellate_boxes(box_size_pix=box_size_pix, offset=20)
tessellation = []
for i, xbox in enumerate(xboxes):
for j, ybox in enumerate(yboxes):
# stack and preprocess triplet
if n_c == 2:
s = np.stack(
[
stack.sci[xbox[0] : xbox[1], ybox[0] : ybox[1]],
ref_projected[xbox[0] : xbox[1], ybox[0] : ybox[1]],
],
axis=2,
)
elif n_c == 3:
s = np.stack(
[
stack.sci[xbox[0] : xbox[1], ybox[0] : ybox[1]],
ref_projected[xbox[0] : xbox[1], ybox[0] : ybox[1]],
stack.zogy[xbox[0] : xbox[1], ybox[0] : ybox[1]],
],
axis=2,
)
else:
raise ValueError(
"bad n_c: only know how to operate on duplets and triplets"
)
s_raw = deepcopy(s)
preprocess_stack(s)
tessellation.append(
{
"i": i,
"j": j,
"xbox": xbox,
"ybox": ybox,
"stack": s,
"stack_raw": s_raw,
}
)
stacks = np.array([t["stack"] for t in tessellation])
predictions = model.predict(
stacks,
)
# detections
dets = []
ind = np.where(predictions[:, 0].flatten() > score_threshold)[0]
for ni, ii in enumerate(ind):
x_o, y_o = predictions[ii, 1:] * stacks.shape[1]
# save png
plot_stack(
tessellation[ii]["stack_raw"],
reticles=((x_o, y_o),),
w=6,
h=2,
dpi=360,
save=str(p_date / f"{name}_{ni}.png"),
cmap="bone",
)
# save npy:
np.save(str(p_date / f"{name}_{ni}.npy"), tessellation[ii]["stack"])
x, y = tessellation[ii]["ybox"][0] + x_o, tessellation[ii]["xbox"][0] + y_o
ra, dec = stack.pix2world_sci(x, y)
c = SkyCoord(ra=ra, dec=dec, unit="deg")
radecstr = c.to_string(style="hmsdms")
t = Time(stack.header_sci["OBSJD"], format="jd")
jd = float(t.jd)
dt = t.datetime
det = {
"id": name,
"ni": ni,
"jd": jd,
"datestr": f"{dt.year} {dt.month} {dt.day + (dt.hour + dt.minute / 60.0 + dt.second / 3600.0)/24}",
"p": float(predictions[ii, 0]),
"x": x,
"y": y,
"ra": ra,
"dec": dec,
"radecstr": radecstr,
"tails_v": checkpoint,
}
dets.append(det)
if len(dets) > 0:
df_dets = pd.DataFrame.from_records(dets)
df_dets.to_csv(str(p_date / f"{name}.csv"), index=False)
if cleanup.lower() != "none":
cleanup_ref = True if cleanup.lower() in ("all", "ref") else False
cleanup_sci = True if cleanup.lower() in ("all", "sci") else False
stack.cleanup(ref=cleanup_ref, sci=cleanup_sci)
return True
except Exception as e:
log(str(e))
return False