ASTROSAT CZTI

Data Quality Report

Orbit 51398

Creation date: 2025-03-30T10:17:37.248700
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/AS1C07_001T03_9000006456_51398cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51398cztM0_level2_quad_clean.evt
Size (bytes)941,618,880100,733,760
Size898.0 MB 96.1 MB
Events in quadrant A10,415,471635,106
Events in quadrant B4,679,649824,509
Events in quadrant C14,660,568336,021
Events in quadrant D4,467,374686,090

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0367531
B0198021
C0491271
D0193141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8170151718.567931%
B81711752.141721%
C8171495160.592339%
D81711762.153959%

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 8200 8171 1262 1262 15.39% 15.44%
B 8201 8172 66 66 0.80% 0.81%
C 8201 8172 4178 4178 50.95% 51.13%
D 8201 8172 145 145 1.77% 1.77%

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 12 3 3234887 16427.33 799 780 196.9
A 12 250 1248601 6338.19 799 780 196.9
A 15 174 895977 4547.07 799 780 196.9
B 10 254 290720 1588.42 859 829 182.5
B 5 172 158418 863.49 859 829 182.5
B 4 206 143256 780.41 859 829 182.5
C 15 179 7071695 40900.39 625 619 172.9
C 4 12 2105417 12174.53 625 619 172.9
C 4 5 763731 4413.98 625 619 172.9
D 2 153 188543 817.24 826 796 229.7
D 2 120 166603 721.74 826 796 229.7
D 11 176 162566 704.16 826 796 229.7

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