ASTROSAT CZTI

Data Quality Report

Orbit 12747

Creation date: 2024-06-27T16:31:53.381950
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_044T01_9000001882_12747cztM0_level2.evt modeM0/AS1A04_044T01_9000001882_12747cztM0_level2_quad_clean.evt
Size (bytes)497,465,28076,296,960
Size474.4 MB 72.8 MB
Events in quadrant A3,425,762464,146
Events in quadrant B3,958,284456,640
Events in quadrant C3,106,427477,455
Events in quadrant D4,127,389451,799

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141443
B0159102
C0135942
D0166492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6606751.135332%
B66062934.435362%
C6606370.560097%
D66061672.528005%

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 7648 6609 6 6 0.08% 0.09%
B 7648 6609 165 165 2.16% 2.50%
C 7648 6609 0 0 0.00% 0.00%
D 7648 6609 119 119 1.56% 1.80%

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 142801 857.67 816 801 165.6
A 15 222 76825 459.18 816 801 165.6
A 15 239 30162 177.34 816 801 165.6
B 4 239 639805 4153.62 805 787 153.8
B 0 214 50701 324.44 805 787 153.8
B 3 209 32332 205.04 805 787 153.8
C 13 61 5858 27.28 795 802 185.4
C 14 234 5027 22.79 795 802 185.4
C 3 202 1945 6.17 795 802 185.4
D 1 52 928203 4484.05 781 765 206.8
D 10 199 80923 387.55 781 765 206.8
D 13 170 60779 290.16 781 765 206.8

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