ASTROSAT CZTI

Data Quality Report

Orbit 08177

Creation date: 2024-06-27T15:28:57.537198
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/AS1G07_043T01_9000001126_08177cztM0_level2.evt modeM0/AS1G07_043T01_9000001126_08177cztM0_level2_quad_clean.evt
Size (bytes)457,352,64083,678,400
Size436.2 MB 79.8 MB
Events in quadrant A3,165,896525,022
Events in quadrant B3,561,553530,412
Events in quadrant C3,059,655532,975
Events in quadrant D3,635,439505,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132473
B0144452
C0130182
D0148362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6307901.426986%
B63071121.775805%
C6307540.856192%
D63071482.346599%

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 7567 6307 0 0 0.00% 0.00%
B 7567 6308 12 12 0.16% 0.19%
C 7567 6308 0 0 0.00% 0.00%
D 7567 6308 59 59 0.78% 0.94%

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 15 30128 179.92 811 794 163.0
A 15 79 8575 47.73 811 794 163.0
A 0 226 8070 44.63 811 794 163.0
B 0 214 131388 860.95 804 785 151.7
B 5 255 119344 781.56 804 785 151.7
B 0 213 96559 631.35 804 785 151.7
C 13 61 6089 29.61 782 788 179.0
C 12 4 5260 24.98 782 788 179.0
C 9 68 3424 14.73 782 788 179.0
D 13 122 187356 978.15 783 760 190.8
D 2 14 165305 862.56 783 760 190.8
D 1 52 116378 606.08 783 760 190.8

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