ASTROSAT CZTI

Data Quality Report

Orbit 50567

Creation date: 2025-02-02T09:23:27.158775
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/AS1T05_239T01_9000006444_50567cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50567cztM0_level2_quad_clean.evt
Size (bytes)498,706,56097,398,720
Size475.6 MB 92.9 MB
Events in quadrant A4,266,319628,729
Events in quadrant B3,745,927693,211
Events in quadrant C5,460,939595,161
Events in quadrant D4,468,398566,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171742
B0159392
C0208132
D0181402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66812343.502470%
B66811852.769047%
C66824927.363065%
D66823044.549536%

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 8966 6681 142 142 1.58% 2.13%
B 8966 6681 59 59 0.66% 0.88%
C 8967 6682 381 381 4.25% 5.70%
D 8967 6683 253 253 2.82% 3.79%

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 12 250 331611 1868.06 711 691 177.1
A 3 63 316107 1780.54 711 691 177.1
A 4 3 165897 932.59 711 691 177.1
B 7 0 266691 1757.03 716 693 151.4
B 5 185 187276 1232.46 716 693 151.4
B 0 229 138240 908.56 716 693 151.4
C 15 195 1083123 5707.09 685 679 189.7
C 15 196 451565 2377.25 685 679 189.7
C 10 69 269929 1419.6 685 679 189.7
D 8 246 377747 1983.36 681 656 190.1
D 6 42 374612 1966.87 681 656 190.1
D 2 120 257278 1349.73 681 656 190.1

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