ASTROSAT CZTI

Data Quality Report

Orbit 33818

Creation date: 2024-06-27T20:53:02.673793
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/AS1A11_106T03_9000004826_33818cztM0_level2.evt modeM0/AS1A11_106T03_9000004826_33818cztM0_level2_quad_clean.evt
Size (bytes)500,999,04090,912,960
Size477.8 MB 86.7 MB
Events in quadrant A2,649,277599,414
Events in quadrant B3,982,154582,044
Events in quadrant C3,249,809596,703
Events in quadrant D4,899,600570,704

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117853
B0157422
C0131012
D0185312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5786180.311096%
B57864046.982371%
C5786941.624611%
D57861382.385067%

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 9191 5788 8 8 0.09% 0.14%
B 9191 5788 305 305 3.32% 5.27%
C 9191 5788 76 76 0.83% 1.31%
D 9191 5788 93 93 1.01% 1.61%

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 15 169 43056 317.88 666 652 133.4
A 13 6 19972 144.83 666 652 133.4
A 10 83 10706 75.37 666 652 133.4
B 5 172 1011447 8255.5 646 630 122.4
B 4 251 231593 1886.31 646 630 122.4
B 0 189 63533 513.74 646 630 122.4
C 15 214 248847 1659.06 648 656 149.6
C 0 10 214036 1426.36 648 656 149.6
C 14 254 160778 1070.35 648 656 149.6
D 8 195 1562358 8993.15 642 629 173.7
D 2 250 303601 1744.65 642 629 173.7
D 12 235 232846 1337.21 642 629 173.7

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter