ASTROSAT CZTI

Data Quality Report

Orbit 24434

Creation date: 2024-06-27T19:05:58.900759
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/AS1T03_183T01_9000003606_24434cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24434cztM0_level2_quad_clean.evt
Size (bytes)1,130,388,480254,995,200
Size1.1 GB 243.2 MB
Events in quadrant A7,069,5931,720,809
Events in quadrant B7,372,9581,774,119
Events in quadrant C7,197,7851,649,095
Events in quadrant D11,594,5761,558,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306813
B0312833
C0306803
D0447473

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03020
D03020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14790700.473293%
B147901120.757268%
C147901511.020960%
D147914523.055912%

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 18760 14793 1 1 0.01% 0.01%
B 18760 14793 6 6 0.03% 0.04%
C 18760 14793 2 2 0.01% 0.01%
D 18761 14794 373 373 1.99% 2.52%

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 4 2 35001 91.94 1825 1788 361.2
A 13 254 23623 60.44 1825 1788 361.2
A 3 137 15731 38.6 1825 1788 361.2
B 3 64 96108 275.37 1848 1804 342.5
B 12 111 40383 112.65 1848 1804 342.5
B 4 200 39621 110.43 1848 1804 342.5
C 14 238 288549 709.23 1763 1777 404.3
C 2 16 33564 78.61 1763 1777 404.3
C 13 61 12120 25.58 1763 1777 404.3
D 8 195 3461495 8330.26 1738 1691 415.3
D 1 52 722078 1734.49 1738 1691 415.3
D 12 218 650661 1562.54 1738 1691 415.3

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