ASTROSAT CZTI

Data Quality Report

Orbit 30674

Creation date: 2024-06-27T20:18:27.826724
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/AS1A10_094T80_9000004424_30674cztM0_level2.evt modeM0/AS1A10_094T80_9000004424_30674cztM0_level2_quad_clean.evt
Size (bytes)610,603,200129,078,720
Size582.3 MB 123.1 MB
Events in quadrant A3,334,029911,414
Events in quadrant B4,951,850892,887
Events in quadrant C3,193,722870,756
Events in quadrant D6,606,046813,981

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134851
B0189621
C0131301
D0240641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60171141.894632%
B60171452.409839%
C60171292.143926%
D601879113.143902%

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 7272 6018 41 41 0.56% 0.68%
B 7272 6018 25 25 0.34% 0.42%
C 7272 6018 2 2 0.03% 0.03%
D 7273 6019 819 819 11.26% 13.61%

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 280604 1786.84 788 774 156.6
A 8 192 11460 68.23 788 774 156.6
A 13 254 11167 66.36 788 774 156.6
B 6 159 1628100 11488.38 761 745 141.7
B 4 81 204672 1439.63 761 745 141.7
B 0 190 93744 656.53 761 745 141.7
C 14 238 123709 717.49 740 744 171.4
C 3 233 106217 615.43 740 744 171.4
C 0 10 42575 244.08 740 744 171.4
D 8 195 1585762 9190.64 736 720 172.5
D 12 227 1210559 7015.08 736 720 172.5
D 13 249 559120 3237.8 736 720 172.5

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