ASTROSAT CZTI

Data Quality Report

Orbit 45813

Creation date: 2024-06-27T23:16:28.417782
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/AS1T05_088T01_9000006126_45813cztM0_level2.fits modeM0/AS1T05_088T01_9000006126_45813cztM0_level2_quad_clean.evt
Size (bytes)863,383,680127,987,200
Size823.4 MB 122.1 MB
Events in quadrant A7,290,546881,614
Events in quadrant B10,083,688785,147
Events in quadrant C3,871,381902,781
Events in quadrant D10,072,002727,059

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268660
B0359580
C0176690
D0358260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83224164.998798%
B8323169120.317193%
C8323350.420521%
D8322123514.840183%

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 8322 8322 7 7 0.08% 0.08%
B 8323 8323 596 596 7.16% 7.16%
C 8323 8323 6 6 0.07% 0.07%
D 8322 8322 902 902 10.84% 10.84%

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 3403637 16577.85 978 953 205.3
A 13 248 74399 357.83 978 953 205.3
A 13 254 15536 71.05 978 953 205.3
B 3 112 5775598 31350.93 927 894 184.2
B 0 189 161344 871.08 927 894 184.2
B 0 171 106336 572.45 927 894 184.2
C 0 207 41591 180.89 961 966 224.6
C 3 233 40626 176.59 961 966 224.6
C 12 16 18548 78.29 961 966 224.6
D 11 241 5704277 24083.58 929 899 236.8
D 1 52 263319 1108.12 929 899 236.8
D 2 249 136610 573.07 929 899 236.8

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