ASTROSAT CZTI

Data Quality Report

Orbit 37665

Creation date: 2024-06-27T21:42:50.666668
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_075T01_9000005342_37665cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37665cztM0_level2_quad_clean.evt
Size (bytes)438,272,64092,427,840
Size418.0 MB 88.1 MB
Events in quadrant A3,517,328606,834
Events in quadrant B2,922,243632,887
Events in quadrant C2,817,809631,888
Events in quadrant D3,685,337585,799

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139653
B0117392
C0113502
D0143842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4868501.027116%
B48681523.122432%
C4868521.068200%
D48681733.553821%

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 6962 4869 28 28 0.40% 0.58%
B 6961 4867 108 108 1.55% 2.22%
C 6961 4867 41 41 0.59% 0.84%
D 6961 4867 162 162 2.33% 3.33%

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 15 222 650603 5316.22 617 607 122.3
A 10 83 306696 2503.45 617 607 122.3
A 9 143 100123 813.93 617 607 122.3
B 5 172 347687 3016.47 614 600 115.1
B 0 230 44199 378.91 614 600 115.1
B 15 85 30817 262.61 614 600 115.1
C 15 214 224251 1589.7 616 623 140.7
C 0 10 147369 1043.17 616 623 140.7
C 14 254 14511 98.73 616 623 140.7
D 12 227 701041 4762.78 608 593 147.1
D 1 47 307830 2089.1 608 593 147.1
D 2 249 73764 497.54 608 593 147.1

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