ASTROSAT CZTI

Data Quality Report

Orbit 20170618_G07_009T01_9000001318_level2

Creation date: 2025-11-14T16:33:43.630158
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/AS1G07_009T01_9000001318cztM0_level2.fits modeM0/AS1G07_009T01_9000001318cztM0_level2_quad_clean.evt
Size (bytes)455,425,920427,057,920
Size434.3 MB 407.3 MB
Events in quadrant A2,703,5002,476,098
Events in quadrant B2,670,2772,522,309
Events in quadrant C2,729,3182,391,785
Events in quadrant D2,324,9882,183,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0760
C0730
D0750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100440
B01031940
C01006050
D01173680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010160
B010180
C010170
D09880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A486277501.542353%
B489977531.536829%
C490714130.841638%
D4883118133.712805%

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 62855 51928 0 0 0.00% 0.00%
B 62855 52213 0 0 0.00% 0.00%
C 62855 52301 0 0 0.00% 0.00%
D 62855 52090 0 0 0.00% 0.00%

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 29 2651 10.94 703 655 182.4
A 7 110 2365 9.37 703 655 182.4
A 0 30 2102 7.93 703 655 182.4
B 2 9 2301 11.42 703 666 143.1
B 12 226 1807 7.97 703 666 143.1
B 3 17 1806 7.96 703 666 143.1
C 1 80 2008 7.05 721 666 190.4
C 1 81 1985 6.93 721 666 190.4
C 3 126 1857 6.26 721 666 190.4
D 3 14 1789 6.6 661 598 180.4
D 3 31 1692 6.06 661 598 180.4
D 6 231 1659 5.88 661 598 180.4

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