ASTROSAT CZTI

Data Quality Report

Orbit 02835

Creation date: 2024-06-27T14:22:14.400797
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/AS1P01_999T99_9000000410_02835cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02835cztM0_level2_quad_clean.evt
Size (bytes)701,913,60049,919,040
Size669.4 MB 47.6 MB
Events in quadrant A2,620,297312,854
Events in quadrant B5,367,342289,640
Events in quadrant C5,516,793291,807
Events in quadrant D7,418,712268,467

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112632
B0194011
C0197301
D0254701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49631072.155954%
B496362512.593190%
C4963117523.675196%
D4963174835.220633%

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 7119 4964 66 66 0.93% 1.33%
B 7119 4964 311 311 4.37% 6.27%
C 7119 4964 886 886 12.45% 17.85%
D 7119 4964 1325 1325 18.61% 26.69%

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 5 295507 2687.15 539 527 109.8
A 0 13 84541 765.34 539 527 109.8
A 0 31 83357 754.55 539 527 109.8
B 0 168 701539 6859.24 528 517 102.2
B 0 219 535729 5236.85 528 517 102.2
B 0 229 456993 4466.45 528 517 102.2
C 0 219 3191086 28889.59 472 473 110.4
C 1 16 164815 1488.04 472 473 110.4
C 3 14 99806 899.42 472 473 110.4
D 0 226 2455813 22519.61 440 433 109.0
D 1 3 1572430 14417.63 440 433 109.0
D 1 4 657500 6026.31 440 433 109.0

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