ASTROSAT CZTI

Data Quality Report

Orbit 47551

Creation date: 2024-10-15T19:23:11.316279
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/AS1C09_002T01_9000006334_47551cztM0_level2.fits modeM0/AS1C09_002T01_9000006334_47551cztM0_level2_quad_clean.evt
Size (bytes)504,728,640118,457,280
Size481.3 MB 113.0 MB
Events in quadrant A7,574,388766,733
Events in quadrant B3,731,118809,107
Events in quadrant C3,222,481778,616
Events in quadrant D3,586,953721,812

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273886
B0163102
C0150933
D0160822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73274375.964242%
B73281031.405568%
C7327220.300259%
D7327320.436741%

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 7683 7329 67 67 0.87% 0.91%
B 7683 7329 30 30 0.39% 0.41%
C 7682 7328 7 7 0.09% 0.10%
D 7682 7328 14 14 0.18% 0.19%

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 4195775 25467.68 797 779 164.7
A 9 191 293052 1774.38 797 779 164.7
A 13 254 9913 55.45 797 779 164.7
B 0 200 256172 1623.9 805 780 157.3
B 0 198 82525 519.77 805 780 157.3
B 0 190 70329 442.23 805 780 157.3
C 6 247 64523 344.71 791 793 184.9
C 1 3 59486 317.46 791 793 184.9
C 14 254 15085 77.3 791 793 184.9
D 2 165 144378 726.99 789 762 197.5
D 12 233 72863 364.98 789 762 197.5
D 7 55 65057 325.47 789 762 197.5

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