ASTROSAT CZTI

Data Quality Report

Orbit 48524

Creation date: 2024-09-17T18:14:46.848301
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_037T01_9000006436_48524cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48524cztM0_level2_quad_clean.evt
Size (bytes)505,598,400117,956,160
Size482.2 MB 112.5 MB
Events in quadrant A7,300,593778,315
Events in quadrant B3,354,581809,594
Events in quadrant C3,078,437771,392
Events in quadrant D4,395,778686,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0286231446
B016212680
C015847696
D019622785

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01586
B01586
C015810
D01586

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7519660.877776%
B7566250.330426%
C755910.013229%
D75701982.615588%

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 7690 7594 5 5 0.07% 0.07%
B 7795 7637 7 7 0.09% 0.09%
C 7719 7632 0 0 0.00% 0.00%
D 7682 7630 157 157 2.04% 2.06%

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 3963908 23417.89 798 781 169.2
A 12 189 237423 1398.3 798 781 169.2
A 13 254 13784 76.83 798 781 169.2
B 12 16 93916 588.34 799 773 158.3
B 5 255 67188 419.51 799 773 158.3
B 0 183 24776 151.61 799 773 158.3
C 3 233 6267 29.6 787 790 185.1
C 13 61 5123 23.41 787 790 185.1
C 12 250 3743 15.96 787 790 185.1
D 2 165 972946 4973.39 776 752 195.5
D 2 249 264305 1348.24 776 752 195.5
D 12 233 106276 539.82 776 752 195.5

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