ASTROSAT CZTI

Data Quality Report

Orbit 09426

Creation date: 2024-06-27T15:45:48.430076
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/AS1A02_178T01_9000001340_09426cztM0_level2.evt modeM0/AS1A02_178T01_9000001340_09426cztM0_level2_quad_clean.evt
Size (bytes)356,578,56059,002,560
Size340.1 MB 56.3 MB
Events in quadrant A2,302,970419,644
Events in quadrant B2,190,192412,285
Events in quadrant C3,760,971240,025
Events in quadrant D2,249,497410,204

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015660
B015445
C015553
D015654

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166126831
B0160206545
C03931325956
D0162736356

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124
B0125
C0126
D0122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4595250.544070%
B4559210.460627%
C3149118337.567482%
D4685200.426894%

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 8792 6016 2 2 0.02% 0.03%
B 8800 5965 0 0 0.00% 0.00%
C 8800 4069 556 556 6.32% 13.66%
D 8796 6064 10 10 0.11% 0.16%

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 8 5 112760 999.34 541 529 112.3
A 4 2 83856 741.97 541 529 112.3
A 1 162 13650 116.83 541 529 112.3
B 0 214 33134 314.96 535 523 103.5
B 0 219 18484 173.47 535 523 103.5
B 10 252 14739 137.3 535 523 103.5
C 4 254 2743770 45102.65 256 257 60.8
C 9 68 10590 169.87 256 257 60.8
C 14 234 3270 49.53 256 257 60.8
D 8 195 104651 775.74 529 516 134.2
D 7 71 48859 360.12 529 516 134.2
D 2 234 23755 173.12 529 516 134.2

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