ASTROSAT CZTI

Data Quality Report

Orbit 03950

Creation date: 2024-06-27T14:35:36.152950
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/AS1G05_246T02_9000000504_03950cztM0_level2.evt modeM0/AS1G05_246T02_9000000504_03950cztM0_level2_quad_clean.evt
Size (bytes)462,715,20074,871,360
Size441.3 MB 71.4 MB
Events in quadrant A3,701,125465,106
Events in quadrant B3,455,442472,462
Events in quadrant C2,850,409461,267
Events in quadrant D3,579,452429,476

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151785
B0142124
C01277410
D0151515

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62841211.925525%
B6284460.732018%
C628160.095526%
D62841993.166773%

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 7575 6286 72 72 0.95% 1.15%
B 7575 6286 12 12 0.16% 0.19%
C 7575 6286 1 1 0.01% 0.02%
D 7575 6286 154 154 2.03% 2.45%

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 0 199 442025 2917.09 748 736 151.3
A 8 15 142133 934.69 748 736 151.3
A 0 118 119310 783.82 748 736 151.3
B 3 0 242326 1654.62 765 747 146.0
B 15 204 118943 809.55 765 747 146.0
B 10 16 38104 255.87 765 747 146.0
C 1 16 8875 48.19 724 728 169.0
C 10 65 6876 36.37 724 728 169.0
C 13 61 6241 32.61 724 728 169.0
D 2 232 631037 3704.51 704 684 170.2
D 12 233 121970 712.78 704 684 170.2
D 13 239 57114 331.63 704 684 170.2

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
Veto Counter