ASTROSAT CZTI

Data Quality Report

Orbit 44846

Creation date: 2024-06-27T23:07:09.138042
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/AS1A13_017T01_9000006028_44846cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44846cztM0_level2_quad_clean.evt
Size (bytes)1,170,135,360269,688,960
Size1.1 GB 257.2 MB
Events in quadrant A12,671,3361,806,952
Events in quadrant B8,316,6381,860,123
Events in quadrant C7,661,1231,763,624
Events in quadrant D13,329,5751,544,052

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0526733
B0366933
C0355703
D0516303

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03500
B03500
C03500
D03500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172723061.771654%
B172732471.429977%
C172731320.764198%
D1727310796.246743%

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 19487 17275 1 1 0.01% 0.01%
B 19488 17276 53 53 0.27% 0.31%
C 19488 17276 22 22 0.11% 0.13%
D 19488 17276 921 921 4.73% 5.33%

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 83 5272666 13387.6 1903 1861 393.7
A 13 248 23419 54.76 1903 1861 393.7
A 3 137 22050 51.28 1903 1861 393.7
B 5 255 194434 520.48 1891 1836 370.0
B 0 155 156306 417.45 1891 1836 370.0
B 0 183 154992 413.89 1891 1836 370.0
C 12 2 176763 399.93 1863 1870 437.3
C 14 254 98833 221.73 1863 1870 437.3
C 3 233 59779 132.42 1863 1870 437.3
D 13 174 3092175 6847.4 1817 1757 451.3
D 2 249 1076174 2380.57 1817 1757 451.3
D 5 235 641246 1416.91 1817 1757 451.3

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