ASTROSAT CZTI

Data Quality Report

Orbit 46109

Creation date: 2024-06-27T23:19:19.997624
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/AS1C07_001T10_9000006170_46109cztM0_level2.fits modeM0/AS1C07_001T10_9000006170_46109cztM0_level2_quad_clean.evt
Size (bytes)682,476,48091,509,120
Size650.9 MB 87.3 MB
Events in quadrant A5,903,892690,410
Events in quadrant B3,290,902719,347
Events in quadrant C2,916,528688,970
Events in quadrant D12,656,271226,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217791
B0141391
C0132971
D0419886

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63822003.133814%
B6382771.206518%
C6382651.018490%
D6381439668.892023%

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 7427 6383 46 46 0.62% 0.72%
B 7427 6383 9 9 0.12% 0.14%
C 7427 6383 28 28 0.38% 0.44%
D 7425 6380 3431 3431 46.21% 53.78%

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 2891742 19522.78 709 693 148.1
A 14 235 266076 1792.09 709 693 148.1
A 13 254 10487 66.14 709 693 148.1
B 0 190 217030 1547.9 713 691 139.8
B 3 112 125836 895.41 713 691 139.8
B 0 186 43025 302.9 713 691 139.8
C 14 254 124849 758.05 704 706 163.8
C 9 237 33269 198.84 704 706 163.8
C 12 249 5315 28.14 704 706 163.8
D 2 37 7331445 67585.7 425 410 108.5
D 8 129 2004420 18475.21 425 410 108.5
D 5 235 882678 8133.74 425 410 108.5

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