ASTROSAT CZTI

Data Quality Report

Orbit 45842

Creation date: 2024-06-27T23:16:48.749573
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_186T01_9000006130_45842cztM0_level2.fits modeM0/AS1T05_186T01_9000006130_45842cztM0_level2_quad_clean.evt
Size (bytes)848,583,360113,402,880
Size809.3 MB 108.1 MB
Events in quadrant A7,174,622790,637
Events in quadrant B11,926,093598,224
Events in quadrant C3,430,011822,447
Events in quadrant D8,288,054688,196

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259933
B0408190
C0158970
D0299720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76784285.574368%
B7678269735.126335%
C767960.078135%
D767983910.925902%

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 7678 7678 246 246 3.20% 3.20%
B 7678 7678 1861 1861 24.24% 24.24%
C 7679 7679 0 0 0.00% 0.00%
D 7679 7679 761 761 9.91% 9.91%

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 3095552 16932.19 869 848 182.8
A 15 14 490133 2677.05 869 848 182.8
A 14 235 107278 582.32 869 848 182.8
B 3 112 8440798 54772.07 773 749 154.1
B 5 172 109850 708.02 773 749 154.1
B 4 171 77220 496.26 773 749 154.1
C 3 233 36550 173.38 864 870 205.8
C 2 14 24078 112.78 864 870 205.8
C 13 61 5696 23.45 864 870 205.8
D 1 52 1281854 6045.91 834 810 211.9
D 11 241 1246328 5878.25 834 810 211.9
D 12 2 751045 3540.75 834 810 211.9

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