diff --git a/tests/test_SpecDisperse.py b/tests/test_SpecDisperse.py
index 0931b5212756c0f14c5c7ca8e3610ba14359d74e..2b9529d86724db8b4d35b5b72845dee52bd98a84 100644
--- a/tests/test_SpecDisperse.py
+++ b/tests/test_SpecDisperse.py
@@ -145,16 +145,22 @@ class TestSpecDisperse(unittest.TestCase):
     def __init__(self, methodName='runTest'):
         super(TestSpecDisperse,self).__init__(methodName)
 
-        self.filePath('csst_fz_gc0')
+        self.filePath('csst_msc_sim/test_sls_and_straylight')
         
         # self.conff = conff
         # self.throughputf = throughputf
 
+
     def filePath(self, file_name):
         fn = os.path.join(os.getenv('UNIT_TEST_DATA_ROOT'), file_name)
         self.conff= os.path.join(fn, 'CSST_GI2.conf')
         self.throughputf= os.path.join(fn, 'GI.Throughput.1st.fits')
         self.testDir = fn
+        self.outDataFn = os.path.join(fn,'output')
+        if os.path.isdir(self.outDataFn):
+            pass
+        else:
+            os.mkdir(self.outDataFn)
 
     def test_rotate901(self):
         m = np.array([[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]])
@@ -484,7 +490,7 @@ class TestSpecDisperse(unittest.TestCase):
 
         print('Spec double disperse test')
         from astropy.io import fits
-        fits.writeto('test.fits',chip.img.array, overwrite = True)
+        fits.writeto(os.path.join(self.outDataFn,'test_sls_doubleDisp.fits'),chip.img.array, overwrite = True)
 
         # plt.figure()
         # plt.imshow(chip.img.array)
diff --git a/tests/test_Straylight.py b/tests/test_Straylight.py
index c79dc6f7980791dc80bee79eed12bf1038cdb3fe..ea6de764327c3968c8d11fb3998019d85b99ab62 100644
--- a/tests/test_Straylight.py
+++ b/tests/test_Straylight.py
@@ -74,7 +74,7 @@ class TestStraylight(unittest.TestCase):
         # print(file_name)
         # fn = os.path.join(os.getenv('UNIT_TEST_DATA_ROOT'), file_name)
         # self.pointingData = np.loadtxt(os.path.join(fn, 'Straylight_test.dat'), dtype=np.double)
-        self.filePath('csst_fz_gc0')
+        self.filePath('csst_msc_sim/test_sls_and_straylight')
         self.filter = filter
         self.grating = grating
         
diff --git a/tests/det_effect_unit_test.py b/tests/test_effect_unit.py
similarity index 99%
rename from tests/det_effect_unit_test.py
rename to tests/test_effect_unit.py
index 92cd4819c06b581361d7626aa43fe9706b5518d8..d77c9b0bd84e8b0faeebb90270e953be9005ecf2 100644
--- a/tests/det_effect_unit_test.py
+++ b/tests/test_effect_unit.py
@@ -17,7 +17,7 @@ class DetTest(unittest.TestCase):
 
     def __init__(self, methodName='runTest'):
         super(DetTest,self).__init__(methodName)
-        self.filePath('csst_fz_gc0')
+        self.filePath('csst_msc_sim/test_sls_and_straylight')
 
     def filePath(self, file_name):
         self.datafn = os.path.join(os.getenv('UNIT_TEST_DATA_ROOT'), file_name)