ASTROSAT CZTI

Data Quality Report

Orbit 20231119_A13_025T01_9000005936_level2

Creation date: 2023-11-21T11:30:13.267467
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/AS1A13_025T01_9000005936cztM0_level2.fits modeM0/AS1A13_025T01_9000005936cztM0_level2_quad_clean.evt
Size (bytes)473,757,120439,128,000
Size451.8 MB 418.8 MB
Events in quadrant A2,771,6622,454,655
Events in quadrant B2,766,0202,614,088
Events in quadrant C2,838,7842,488,403
Events in quadrant D2,337,3422,110,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01569710
B01137810
C01231780
D01675220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010740
B010740
C010740
D010740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5291232826.202752%
B529127661.447687%
C5291211372.148851%
D5291339867.533120%

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 61397 52886 0 0 0.00% 0.00%
B 61397 52911 0 0 0.00% 0.00%
C 61397 52872 0 0 0.00% 0.00%
D 61398 52887 0 0 0.00% 0.00%

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 7 110 2360 9.16 724 676 183.8
A 0 29 2243 8.52 724 676 183.8
A 0 30 2082 7.65 724 676 183.8
B 2 9 2546 12.75 732 696 145.1
B 2 8 2013 9.08 732 696 145.1
B 5 232 2000 8.99 732 696 145.1
C 3 203 2223 7.84 750 698 194.4
C 3 202 2205 7.75 750 698 194.4
C 1 81 2182 7.63 750 698 194.4
D 10 189 1820 6.39 673 610 189.2
D 6 79 1741 5.98 673 610 189.2
D 3 14 1704 5.78 673 610 189.2

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