ASTROSAT CZTI

Data Quality Report

Orbit 37189

Creation date: 2024-06-27T21:36:41.812082
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/AS1A11_079T01_9000005284_37189cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37189cztM0_level2_quad_clean.evt
Size (bytes)453,274,56096,431,040
Size432.3 MB 92.0 MB
Events in quadrant A2,803,645661,644
Events in quadrant B2,883,964657,715
Events in quadrant C4,546,325629,096
Events in quadrant D3,145,181612,213

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113743
B0115902
C0166312
D0125852

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5136200.389408%
B5136651.265576%
C51364889.501558%
D51361082.102804%

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 9413 5138 5 5 0.05% 0.10%
B 9413 5138 43 43 0.46% 0.84%
C 9413 5138 507 507 5.39% 9.87%
D 9413 5138 90 90 0.96% 1.75%

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 256915 1971.33 647 637 130.0
A 9 143 38038 287.69 647 637 130.0
A 13 254 8479 60.32 647 637 130.0
B 5 172 221829 1842.27 631 617 120.1
B 5 184 119768 992.3 631 617 120.1
B 0 155 32550 265.94 631 617 120.1
C 10 49 1668174 11910.09 606 610 140.0
C 15 214 215562 1535.23 606 610 140.0
C 0 10 193211 1375.6 606 610 140.0
D 2 249 202928 1339.25 623 608 151.1
D 13 249 199550 1316.89 623 608 151.1
D 2 153 105945 697.28 623 608 151.1

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