ASTROSAT CZTI

Data Quality Report

Orbit 52608

Creation date: 2025-06-20T10:01:40.631319
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C09_011T06_9000006478_52608cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52608cztM0_level2_quad_clean.evt
Size (bytes)1,900,584,000154,160,640
Size1.8 GB 147.0 MB
Events in quadrant A7,269,8841,234,758
Events in quadrant B17,939,2381,048,682
Events in quadrant C18,535,208861,498
Events in quadrant D25,561,731580,212

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310404
B0628374
C0644739
D0853124

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136173442.526254%
B13618340024.966956%
C13617414430.432548%
D13617718152.735551%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 15306 13620 137 137 0.90% 1.01%
B 15307 13621 2577 2577 16.84% 18.92%
C 15307 13621 3695 3695 24.14% 27.13%
D 15307 13621 6687 6687 43.69% 49.09%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 4 249 407206 1126.51 1440 1401 360.2
A 5 243 226062 623.66 1440 1401 360.2
A 3 14 199928 551.11 1440 1401 360.2
B 10 254 5078191 18344.87 1310 1264 276.7
B 10 128 4385596 15842.26 1310 1264 276.7
B 10 247 702374 2533.38 1310 1264 276.7
C 15 248 10332070 31992.79 1171 1155 322.9
C 2 12 1382216 4276.87 1171 1155 322.9
C 4 5 805372 2490.5 1171 1155 322.9
D 2 62 12508404 40026.58 1081 1028 312.5
D 8 176 4619853 14781.34 1081 1028 312.5
D 6 42 615209 1965.53 1081 1028 312.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter