ASTROSAT CZTI

Data Quality Report

Orbit 32693

Creation date: 2024-06-27T20:40:53.757539
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/AS1T04_063T01_9000004724_32693cztM0_level2.evt modeM0/AS1T04_063T01_9000004724_32693cztM0_level2_quad_clean.evt
Size (bytes)1,764,550,080182,404,800
Size1.6 GB 174.0 MB
Events in quadrant A17,259,4131,055,848
Events in quadrant B8,388,8881,204,669
Events in quadrant C9,912,0661,152,657
Events in quadrant D16,831,1291,033,392

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0530

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0617905
B0352204
C0396864
D0608194

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15593379824.357083%
B15593690.442506%
C155935743.681139%
D15593223314.320528%

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 19773 15596 3077 3077 15.56% 19.73%
B 19773 15596 20 20 0.10% 0.13%
C 19773 15596 462 462 2.34% 2.96%
D 19773 15596 1986 1986 10.04% 12.73%

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 15 249 10726122 32675.65 1646 1617 328.2
A 13 6 35113 102.06 1646 1617 328.2
A 7 16 31089 89.8 1646 1617 328.2
B 0 219 330996 945.19 1842 1805 348.3
B 0 230 246716 703.2 1842 1805 348.3
B 0 199 185542 527.56 1842 1805 348.3
C 9 236 1011223 2500.13 1750 1767 403.8
C 0 10 1002729 2479.1 1750 1767 403.8
C 6 247 598062 1476.85 1750 1767 403.8
D 12 33 2653969 6746.56 1664 1629 393.1
D 7 80 1388256 3527.06 1664 1629 393.1
D 2 249 1141980 2900.63 1664 1629 393.1

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