ASTROSAT CZTI

Data Quality Report

Orbit 03880

Creation date: 2024-06-27T14:34:43.665962
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/AS1G05_083T01_9000000494_03880cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03880cztM0_level2_quad_clean.evt
Size (bytes)460,840,32078,206,400
Size439.5 MB 74.6 MB
Events in quadrant A3,221,511486,030
Events in quadrant B3,154,124496,613
Events in quadrant C3,388,641486,055
Events in quadrant D3,762,812458,392

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139373
B0135232
C0145392
D0159062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63171742.754472%
B63171131.788824%
C6317951.503878%
D63173024.780750%

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 7567 6317 83 83 1.10% 1.31%
B 7567 6317 11 11 0.15% 0.17%
C 7567 6317 28 28 0.37% 0.44%
D 7567 6317 277 277 3.66% 4.38%

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 0 118 220201 1497.34 730 714 146.6
A 15 174 93822 635.18 730 714 146.6
A 0 50 49975 336.06 730 714 146.6
B 15 204 106732 757.23 744 728 140.0
B 4 81 54306 382.73 744 728 140.0
B 5 172 42543 298.7 744 728 140.0
C 2 53 517439 3171.66 706 709 162.9
C 1 16 59257 359.36 706 709 162.9
C 12 4 42194 254.63 706 709 162.9
D 14 34 955446 5667.49 697 677 168.5
D 13 248 49764 291.38 697 677 168.5
D 2 118 35389 206.05 697 677 168.5

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
Veto Counter