ASTROSAT CZTI

Data Quality Report

Orbit 03791

Creation date: 2024-06-27T14:33:43.076121
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_152T03_9000000488_03791cztM0_level2.evt modeM0/AS1G05_152T03_9000000488_03791cztM0_level2_quad_clean.evt
Size (bytes)493,464,96058,273,920
Size470.6 MB 55.6 MB
Events in quadrant A3,509,366334,828
Events in quadrant B4,278,251332,945
Events in quadrant C3,591,830333,268
Events in quadrant D3,136,687322,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143653
B0168512
C0149282
D0135332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63121892.994297%
B63122343.707224%
C63122544.024081%
D6313921.457310%

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 7552 6312 74 74 0.98% 1.17%
B 7552 6312 116 116 1.54% 1.84%
C 7552 6312 158 158 2.09% 2.50%
D 7553 6313 21 21 0.28% 0.33%

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 225138 1398.82 792 775 160.4
A 0 50 113983 705.81 792 775 160.4
A 13 251 31455 191.28 792 775 160.4
B 0 173 460616 3029.68 801 785 151.8
B 15 204 421596 2772.59 801 785 151.8
B 14 167 109401 715.63 801 785 151.8
C 2 53 614477 3519.12 754 758 174.4
C 12 4 12590 67.85 754 758 174.4
C 1 16 8299 43.24 754 758 174.4
D 1 84 77483 416.08 763 741 184.4
D 13 239 34472 182.88 763 741 184.4
D 13 223 26584 140.11 763 741 184.4

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
Veto Counter