ASTROSAT CZTI

Data Quality Report

Orbit 58477

Creation date: 2026-07-19T20:51:21.206767
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/AS1A14_044T04_9000006592_58477cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58477cztM0_level2_quad_clean.evt
Size (bytes)1,561,714,560261,276,480
Size1.5 GB 249.2 MB
Events in quadrant A11,479,6751,752,886
Events in quadrant B15,635,1391,738,597
Events in quadrant C16,767,8751,503,442
Events in quadrant D12,437,4491,587,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0472282
B0595952
C0633562
D0504472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192648394.355274%
B19264240712.494809%
C19264257413.361711%
D192658364.339476%

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 20039 19266 419 419 2.09% 2.17%
B 20039 19266 1515 1515 7.56% 7.86%
C 20039 19266 2174 2174 10.85% 11.28%
D 20040 19267 564 564 2.81% 2.93%

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 10 17 1372022 2571.12 2146 2093 532.8
A 10 251 522096 975.96 2146 2093 532.8
A 7 64 384090 716.94 2146 2093 532.8
B 5 172 3798306 8772.89 2031 1955 432.7
B 2 249 2955537 6825.36 2031 1955 432.7
B 10 247 220156 504.24 2031 1955 432.7
C 15 147 5271865 9688.43 1999 1985 543.9
C 5 10 1637392 3006.62 1999 1985 543.9
C 15 1 579759 1062.21 1999 1985 543.9
D 8 240 2481043 4218.08 2073 1977 587.7
D 2 153 977891 1660.5 2073 1977 587.7
D 3 12 247109 417.09 2073 1977 587.7

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