ASTROSAT CZTI

Data Quality Report

Orbit 41723

Creation date: 2024-06-27T22:32:02.701863
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/AS1A12_077T12_9000005692_41723cztM0_level2.fits modeM0/AS1A12_077T12_9000005692_41723cztM0_level2_quad_clean.evt
Size (bytes)317,580,48084,268,800
Size302.9 MB 80.4 MB
Events in quadrant A2,758,275573,853
Events in quadrant B2,444,031582,596
Events in quadrant C2,813,183533,642
Events in quadrant D3,351,745512,393

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112482
B0108052
C0114882
D0134572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4985170.341023%
B4985300.601805%
C49852174.353059%
D49851462.928786%

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 7018 4986 6 6 0.09% 0.12%
B 7018 4986 15 15 0.21% 0.30%
C 7018 4986 206 206 2.94% 4.13%
D 7018 4986 142 142 2.02% 2.85%

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 522148 4541.81 554 543 114.8
A 15 223 46876 403.44 554 543 114.8
A 7 3 33045 283.01 554 543 114.8
B 0 186 162308 1496.49 548 532 108.1
B 4 141 84798 779.49 548 532 108.1
B 15 35 27334 247.93 548 532 108.1
C 0 10 520920 4163.58 527 531 125.0
C 15 214 199296 1590.3 527 531 125.0
C 14 254 27161 213.06 527 531 125.0
D 12 79 884318 6712.01 538 524 131.7
D 13 249 291935 2213.13 538 524 131.7
D 10 199 51003 383.36 538 524 131.7

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