ASTROSAT CZTI

Data Quality Report

Orbit 08064

Creation date: 2024-06-27T15:27:29.229548
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/AS1A02_055T01_9000001114_08064cztM0_level2.evt modeM0/AS1A02_055T01_9000001114_08064cztM0_level2_quad_clean.evt
Size (bytes)467,962,560101,488,320
Size446.3 MB 96.8 MB
Events in quadrant A3,172,053639,200
Events in quadrant B3,664,958658,790
Events in quadrant C3,231,921665,613
Events in quadrant D3,636,811631,825

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142643
B0155872
C0142442
D0157592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6861630.918233%
B68611812.638099%
C6861620.903658%
D68611762.565224%

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 9151 6863 0 0 0.00% 0.00%
B 9151 6863 47 47 0.51% 0.68%
C 9151 6863 0 0 0.00% 0.00%
D 9151 6863 92 92 1.01% 1.34%

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 0 226 7625 40.76 823 806 167.3
A 12 194 7285 38.73 823 806 167.3
A 13 254 3593 16.66 823 806 167.3
B 4 239 210618 1322.98 833 811 158.6
B 4 81 148684 932.44 833 811 158.6
B 0 214 24141 147.11 833 811 158.6
C 1 16 21755 109.99 822 827 190.3
C 13 61 6402 29.3 822 827 190.3
C 8 222 2463 8.6 822 827 190.3
D 1 83 257564 1249.85 800 779 205.5
D 1 52 237287 1151.16 800 779 205.5
D 2 14 36715 174.91 800 779 205.5

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