ASTROSAT CZTI

Data Quality Report

Orbit 03881

Creation date: 2024-06-27T14:34:44.483971
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_083T01_9000000494_03881cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03881cztM0_level2_quad_clean.evt
Size (bytes)447,678,72090,668,160
Size426.9 MB 86.5 MB
Events in quadrant A3,068,219577,622
Events in quadrant B3,222,786579,877
Events in quadrant C3,562,520567,933
Events in quadrant D3,250,600555,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139513
B0141362
C0154172
D0147042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66751402.097378%
B66751472.202247%
C66751972.951311%
D66751291.932584%

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 7595 6675 0 0 0.00% 0.00%
B 7595 6675 12 12 0.16% 0.18%
C 7595 6675 95 95 1.25% 1.42%
D 7595 6675 30 30 0.39% 0.45%

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 0 118 95941 618.15 758 741 154.0
A 0 226 16801 104.28 758 741 154.0
A 15 174 13317 81.66 758 741 154.0
B 15 204 92404 626.18 766 748 146.4
B 10 16 59035 398.21 766 748 146.4
B 4 81 35289 235.98 766 748 146.4
C 2 53 416546 2467.25 728 730 168.5
C 14 234 99521 586.18 728 730 168.5
C 1 16 82595 485.75 728 730 168.5
D 14 34 194372 1102.43 731 709 175.7
D 13 248 81206 458.23 731 709 175.7
D 13 223 38550 215.41 731 709 175.7

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