ASTROSAT CZTI

Data Quality Report

Orbit 30971

Creation date: 2024-06-27T20:21:46.368765
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/AS1A10_058T11_9000004474_30971cztM0_level2.evt modeM0/AS1A10_058T11_9000004474_30971cztM0_level2_quad_clean.evt
Size (bytes)293,270,40033,099,840
Size279.7 MB 31.6 MB
Events in quadrant A1,776,533192,241
Events in quadrant B2,898,256186,588
Events in quadrant C1,916,617178,866
Events in quadrant D2,035,415179,946

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076361
B0114691
C079201
D083541

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3737310.829542%
B3737701.873160%
C3737651.739363%
D3737270.722505%

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 3737 3737 0 0 0.00% 0.00%
B 3737 3737 8 8 0.21% 0.21%
C 3737 3737 3 3 0.08% 0.08%
D 3737 3737 7 7 0.19% 0.19%

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 13 254 5798 56.68 460 450 94.4
A 3 137 4581 43.78 460 450 94.4
A 0 226 3806 35.57 460 450 94.4
B 6 159 1012149 11378.53 451 440 88.9
B 15 32 30694 340.26 451 440 88.9
B 5 172 15850 173.31 451 440 88.9
C 0 10 123706 1185.78 436 440 104.0
C 14 238 71546 684.02 436 440 104.0
C 2 114 8661 79.08 436 440 104.0
D 8 195 240706 2213.21 446 434 108.6
D 2 250 70132 642.01 446 434 108.6
D 2 234 20807 187.66 446 434 108.6

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