ASTROSAT CZTI

Data Quality Report

Orbit 26046

Creation date: 2024-06-27T19:24:14.721300
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/AS1A09_085T03_9000003764_26046cztM0_level2.evt modeM0/AS1A09_085T03_9000003764_26046cztM0_level2_quad_clean.evt
Size (bytes)578,485,440109,782,720
Size551.7 MB 104.7 MB
Events in quadrant A3,525,309722,957
Events in quadrant B3,599,869724,868
Events in quadrant C3,410,531705,313
Events in quadrant D6,501,458676,274

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151250
B0152800
C0145750
D0241720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7115620.871398%
B7116670.941540%
C7116921.292861%
D711677510.890950%

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 7520 7116 39 39 0.52% 0.55%
B 7521 7116 9 9 0.12% 0.13%
C 7521 7116 2 2 0.03% 0.03%
D 7521 7116 597 597 7.94% 8.39%

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 0 13 253351 1468.96 848 831 171.9
A 13 254 11772 63.65 848 831 171.9
A 3 137 7830 40.71 848 831 171.9
B 0 190 106940 655.35 844 822 161.9
B 10 245 88611 542.16 844 822 161.9
B 0 229 50208 304.99 844 822 161.9
C 14 238 132098 690.88 819 825 190.0
C 3 233 59042 306.39 819 825 190.0
C 3 248 18529 93.18 819 825 190.0
D 1 52 2996322 14398.52 794 773 208.0
D 12 233 244333 1170.7 794 773 208.0
D 12 217 97599 465.41 794 773 208.0

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