ASTROSAT CZTI

Data Quality Report

Orbit 12464

Creation date: 2024-06-27T16:27:45.257956
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/AS1A04_174T01_9000001850_12464cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12464cztM0_level2_quad_clean.evt
Size (bytes)618,966,72072,469,440
Size590.3 MB 69.1 MB
Events in quadrant A8,151,058415,639
Events in quadrant B3,528,380449,872
Events in quadrant C3,101,251449,914
Events in quadrant D3,520,267420,338

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288872
B0144971
C0134621
D0148371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A655490713.838877%
B65771171.778927%
C6577220.334499%
D6577991.505246%

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 7633 6556 496 496 6.50% 7.57%
B 7633 6579 52 52 0.68% 0.79%
C 7633 6579 0 0 0.00% 0.00%
D 7633 6579 45 45 0.59% 0.68%

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 13 251 4369273 27332.92 778 764 159.8
A 0 23 212766 1326.46 778 764 159.8
A 1 162 182006 1134.0 778 764 159.8
B 4 239 183479 1176.83 816 800 155.2
B 0 187 61016 387.91 816 800 155.2
B 3 209 43183 273.03 816 800 155.2
C 13 61 5817 27.25 795 801 184.0
C 14 234 2691 10.27 795 801 184.0
C 8 222 2016 6.6 795 801 184.0
D 1 52 366685 1947.23 779 763 187.9
D 7 71 64330 338.27 779 763 187.9
D 7 80 46919 245.62 779 763 187.9

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