ASTROSAT CZTI

Data Quality Report

Orbit 44766

Creation date: 2024-06-27T23:06:16.717640
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_004T12_9000006020_44766cztM0_level2.fits modeM0/AS1A13_004T12_9000006020_44766cztM0_level2_quad_clean.evt
Size (bytes)652,720,320105,203,520
Size622.5 MB 100.3 MB
Events in quadrant A10,024,215590,897
Events in quadrant B3,740,118771,128
Events in quadrant C3,222,838748,444
Events in quadrant D6,639,250594,305

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346842
B0158343
C0146072
D0245602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6905185626.879073%
B69041331.926419%
C6904530.767671%
D6904106315.396871%

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 7875 6905 1475 1475 18.73% 21.36%
B 7874 6905 46 46 0.58% 0.67%
C 7874 6905 32 32 0.41% 0.46%
D 7874 6904 798 798 10.13% 11.56%

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 15 223 5368779 37660.45 691 675 142.5
A 10 83 1964747 13779.14 691 675 142.5
A 13 248 14301 95.59 691 675 142.5
B 0 189 481086 3170.45 765 741 151.5
B 5 255 71720 468.49 765 741 151.5
B 0 219 45107 292.83 765 741 151.5
C 14 254 171537 958.72 759 764 178.1
C 1 3 66692 370.12 759 764 178.1
C 12 250 7539 38.03 759 764 178.1
D 1 52 2432708 13930.22 693 672 174.6
D 7 38 379653 2170.73 693 672 174.6
D 2 249 296351 1693.59 693 672 174.6

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