ASTROSAT CZTI

Data Quality Report

Orbit 50586

Creation date: 2025-02-03T17:00:04.771890
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_50586cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50586cztM0_level2_quad_clean.evt
Size (bytes)1,007,472,96082,569,600
Size960.8 MB 78.7 MB
Events in quadrant A5,626,217605,552
Events in quadrant B6,817,606631,585
Events in quadrant C10,019,270462,420
Events in quadrant D14,279,200302,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215590
B0251990
C0347213
D0472930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71466388.928072%
B714789112.466769%
C7146217730.464596%
D7146383853.708368%

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 7146 7146 374 374 5.23% 5.23%
B 7147 7147 734 734 10.27% 10.27%
C 7145 7145 1880 1880 26.31% 26.31%
D 7146 7146 3956 3956 55.36% 55.36%

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 1861977 10272.84 718 699 181.2
A 4 3 189776 1043.56 718 699 181.2
A 4 4 121277 665.5 718 699 181.2
B 4 170 1441069 9675.07 694 671 148.9
B 2 249 1422225 9548.49 694 671 148.9
B 5 172 328132 2199.54 694 671 148.9
C 15 178 2306301 13555.39 605 600 170.1
C 15 147 1501865 8826.05 605 600 170.1
C 15 196 1246860 7326.86 605 600 170.1
D 7 61 9238290 56306.9 588 567 164.1
D 7 60 530811 3232.01 588 567 164.1
D 14 67 512539 3120.63 588 567 164.1

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