ASTROSAT CZTI

Data Quality Report

Orbit 46661

Creation date: 2024-06-27T23:26:03.606434
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/AS1A13_039T01_9000006246_46661cztM0_level2.fits modeM0/AS1A13_039T01_9000006246_46661cztM0_level2_quad_clean.evt
Size (bytes)475,856,640105,324,480
Size453.8 MB 100.4 MB
Events in quadrant A6,419,963680,836
Events in quadrant B3,381,201721,894
Events in quadrant C3,051,406704,094
Events in quadrant D4,265,603635,836

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233362
B0145922
C0138312
D0172202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63992684.188154%
B63991211.890920%
C6399861.343960%
D63991512.359744%

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 7544 6400 151 151 2.00% 2.36%
B 7544 6400 49 49 0.65% 0.77%
C 7544 6400 74 74 0.98% 1.16%
D 7544 6400 137 137 1.82% 2.14%

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 10 83 3616412 25761.89 679 666 140.4
A 13 248 65843 464.38 679 666 140.4
A 15 235 51016 358.74 679 666 140.4
B 0 189 318600 2361.99 692 671 134.6
B 4 171 101236 747.13 692 671 134.6
B 15 201 52533 385.3 692 671 134.6
C 9 54 213982 1320.87 689 693 161.5
C 14 254 53115 324.64 689 693 161.5
C 1 241 43907 267.62 689 693 161.5
D 1 52 676019 3989.75 679 658 169.3
D 12 128 319201 1881.82 679 658 169.3
D 13 249 132592 779.41 679 658 169.3

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