ASTROSAT CZTI

Data Quality Report

Orbit 51024

Creation date: 2025-03-05T16:19:56.668499
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/AS1C07_001T02_9000006452_51024cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51024cztM0_level2_quad_clean.evt
Size (bytes)1,802,770,560245,750,400
Size1.7 GB 234.4 MB
Events in quadrant A19,902,3661,556,161
Events in quadrant B13,878,1751,771,495
Events in quadrant C17,431,2531,362,217
Events in quadrant D14,069,2011,451,198

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0723383
B0545213
C0649203
D0553773

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18844197310.470176%
B1884410705.678200%
C18843282414.986998%
D1884310595.620124%

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 19829 18847 1512 1512 7.63% 8.02%
B 19829 18847 513 513 2.59% 2.72%
C 19828 18845 2551 2551 12.87% 13.54%
D 19828 18845 902 902 4.55% 4.79%

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 12 80 5290480 11176.31 1907 1861 473.2
A 3 95 2759187 5826.99 1907 1861 473.2
A 12 3 858831 1811.01 1907 1861 473.2
B 4 81 2214263 5452.09 1927 1859 405.8
B 0 172 878860 2161.22 1927 1859 405.8
B 4 171 694653 1707.27 1927 1859 405.8
C 15 1 4394914 9016.83 1770 1763 487.2
C 15 147 2129265 4366.64 1770 1763 487.2
C 1 44 1009591 2068.54 1770 1763 487.2
D 12 191 1317894 2538.45 1871 1810 518.5
D 8 176 714806 1375.22 1871 1810 518.5
D 15 170 695020 1337.05 1871 1810 518.5

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