ASTROSAT CZTI

Data Quality Report

Orbit 46725

Creation date: 2024-06-27T23:26:52.479014
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_092T09_9000006258_46725cztM0_level2.fits modeM0/AS1A13_092T09_9000006258_46725cztM0_level2_quad_clean.evt
Size (bytes)589,452,480122,405,760
Size562.1 MB 116.7 MB
Events in quadrant A7,374,245805,063
Events in quadrant B3,904,442837,448
Events in quadrant C3,546,085823,016
Events in quadrant D6,382,603691,415

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272931
B0170851
C0164841
D0245931

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78992373.000380%
B78991461.848335%
C7899340.430434%
D78997559.558172%

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 7899 7899 13 13 0.16% 0.16%
B 7899 7899 13 13 0.16% 0.16%
C 7899 7899 2 2 0.03% 0.03%
D 7899 7899 644 644 8.15% 8.15%

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 3782813 20604.87 875 851 183.5
A 14 235 76928 414.48 875 851 183.5
A 9 191 49024 262.46 875 851 183.5
B 3 112 150717 843.96 885 856 177.6
B 4 171 95761 534.47 885 856 177.6
B 5 32 64279 357.17 885 856 177.6
C 3 233 54327 259.23 874 878 206.2
C 1 241 42671 202.7 874 878 206.2
C 14 254 14804 67.54 874 878 206.2
D 1 52 2315903 11022.65 834 809 210.0
D 12 128 182180 863.55 834 809 210.0
D 13 249 168806 799.87 834 809 210.0

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