ASTROSAT CZTI

Data Quality Report

Orbit 44839

Creation date: 2024-06-27T23:07:05.264949
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_017T01_9000006028_44839cztM0_level2.fits modeM0/AS1A13_017T01_9000006028_44839cztM0_level2_quad_clean.evt
Size (bytes)545,008,320114,454,080
Size519.8 MB 109.2 MB
Events in quadrant A5,382,570758,844
Events in quadrant B3,589,528797,244
Events in quadrant C3,357,562763,558
Events in quadrant D7,297,912653,724

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219672
B0155252
C0151663
D0267842

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70562493.528912%
B70571101.558736%
C70561031.459751%
D70565607.936508%

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 8851 7058 9 9 0.10% 0.13%
B 8852 7059 7 7 0.08% 0.10%
C 8851 7058 31 31 0.35% 0.44%
D 8851 7058 280 280 3.16% 3.97%

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 2281957 13897.33 788 772 164.1
A 13 248 33624 200.14 788 772 164.1
A 7 3 10931 61.89 788 772 164.1
B 5 255 215921 1369.05 795 771 157.2
B 0 155 93578 590.55 795 771 157.2
B 0 183 23433 144.2 795 771 157.2
C 12 2 234790 1283.23 782 787 182.4
C 3 233 36077 193.52 782 787 182.4
C 12 250 13984 72.37 782 787 182.4
D 11 241 1544912 8045.16 758 734 191.9
D 13 174 787396 4098.5 758 734 191.9
D 1 52 599230 3118.16 758 734 191.9

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