ASTROSAT CZTI

Data Quality Report

Orbit 35357

Creation date: 2022-04-13T10:29:02.543999
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/AS1A11_037T01_9000005066_35357cztM0_level2.evt modeM0/AS1A11_037T01_9000005066_35357cztM0_level2_quad_clean.evt
Size (bytes)618,212,16096,952,320
Size589.6 MB 92.5 MB
Events in quadrant A3,200,574646,009
Events in quadrant B4,303,857641,563
Events in quadrant C3,831,808622,393
Events in quadrant D6,924,405550,190

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140772
B0172612
C0157942
D0253552

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6824140.205158%
B68241902.784291%
C68241402.051583%
D682487712.851700%

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 8137 6825 2 2 0.02% 0.03%
B 8137 6825 141 141 1.73% 2.07%
C 8137 6825 115 115 1.41% 1.68%
D 8137 6825 909 909 11.17% 13.32%

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 131809 833.25 770 753 157.3
A 7 3 27795 171.93 770 753 157.3
A 15 169 27368 169.22 770 753 157.3
B 5 172 561331 3823.92 760 740 146.6
B 4 251 427046 2907.93 760 740 146.6
B 5 31 69103 466.32 760 740 146.6
C 0 10 303592 1775.9 733 738 170.5
C 15 214 276798 1618.78 733 738 170.5
C 3 233 199637 1166.32 733 738 170.5
D 7 80 2794499 16463.7 695 676 169.7
D 8 195 760741 4478.98 695 676 169.7
D 2 152 170159 998.75 695 676 169.7

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