ASTROSAT CZTI

Data Quality Report

Orbit 18426

Creation date: 2024-06-27T17:49:40.964606
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/AS1A05_199T01_9000002732_18426cztM0_level2.evt modeM0/AS1A05_199T01_9000002732_18426cztM0_level2_quad_clean.evt
Size (bytes)444,067,20096,837,120
Size423.5 MB 92.4 MB
Events in quadrant A3,083,891625,176
Events in quadrant B3,171,245651,684
Events in quadrant C3,197,619621,850
Events in quadrant D3,567,676594,257

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131442
B0133562
C0133982
D0149222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6300380.603175%
B6300590.936508%
C6300751.190476%
D6299600.952532%

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 7625 6301 1 1 0.01% 0.02%
B 7625 6301 0 0 0.00% 0.00%
C 7625 6301 0 0 0.00% 0.00%
D 7624 6300 30 30 0.39% 0.48%

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 0 254 10372 61.27 793 780 156.5
A 3 254 9052 52.84 793 780 156.5
A 4 2 8310 48.1 793 780 156.5
B 0 189 23676 152.1 805 785 150.5
B 12 111 17298 109.72 805 785 150.5
B 11 111 14719 92.59 805 785 150.5
C 14 238 122072 680.04 773 781 178.4
C 3 233 56543 312.64 773 781 178.4
C 13 61 5582 26.92 773 781 178.4
D 1 52 279449 1513.18 767 744 184.2
D 12 110 110407 595.4 767 744 184.2
D 8 230 107949 582.05 767 744 184.2

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