ASTROSAT CZTI

Data Quality Report

Orbit 54809

Creation date: 2025-11-15T09:33:23.816950
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/AS1A14_039T06_9000006526_54809cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54809cztM0_level2_quad_clean.evt
Size (bytes)450,584,64096,592,320
Size429.7 MB 92.1 MB
Events in quadrant A3,011,002650,868
Events in quadrant B3,728,534678,456
Events in quadrant C3,757,559608,385
Events in quadrant D5,646,983508,113

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143802
B0161679
C0162742
D0218562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6872851.236903%
B68712653.856789%
C68721722.502910%
D6872103715.090221%

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 7742 6873 11 11 0.14% 0.16%
B 7742 6871 128 128 1.65% 1.86%
C 7742 6872 75 75 0.97% 1.09%
D 7742 6872 912 912 11.78% 13.27%

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 5 240 52368 279.15 743 722 185.0
A 3 94 22407 117.21 743 722 185.0
A 3 14 16416 84.83 743 722 185.0
B 5 185 520948 3327.79 722 696 156.3
B 2 249 146822 934.69 722 696 156.3
B 10 247 53025 334.72 722 696 156.3
C 9 38 265211 1351.83 713 708 195.7
C 4 5 178915 910.79 713 708 195.7
C 12 252 154028 783.59 713 708 195.7
D 15 94 2169476 11367.46 662 631 190.8
D 1 31 317053 1658.44 662 631 190.8
D 12 6 94724 493.16 662 631 190.8

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