ASTROSAT CZTI

Data Quality Report

Orbit 01234

Creation date: 2024-06-27T14:09:33.058706
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/AS1G04_003T02_9000000224_01234cztM0_level2.evt modeM0/AS1G04_003T02_9000000224_01234cztM0_level2_quad_clean.evt
Size (bytes)423,270,72038,859,840
Size403.7 MB 37.1 MB
Events in quadrant A3,115,558254,745
Events in quadrant B3,259,448253,354
Events in quadrant C3,000,370239,704
Events in quadrant D3,262,574235,921

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111410
B0115980
C0108360
D0116020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2689180.669394%
B2689170.632205%
C268900.000000%
D268940.148754%

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 2689 2689 58 58 2.16% 2.16%
B 2689 2689 68 68 2.53% 2.53%
C 2689 2689 20 20 0.74% 0.74%
D 2689 2689 121 121 4.50% 4.50%

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 12 133 68969 362.86 781 786 187.9
A 3 80 26770 138.28 781 786 187.9
A 12 243 20764 106.32 781 786 187.9
B 6 53 108020 576.44 785 788 186.0
B 15 22 85482 455.29 785 788 186.0
B 5 249 28880 151.01 785 788 186.0
C 15 241 143793 704.37 723 748 203.1
C 3 79 14413 67.29 723 748 203.1
C 3 111 11097 50.96 723 748 203.1
D 1 239 409907 1817.1 728 753 225.2
D 10 84 102546 452.07 728 753 225.2
D 1 83 11734 48.77 728 753 225.2

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