ASTROSAT CZTI

Data Quality Report

Orbit 13131

Creation date: 2024-06-27T16:36:43.149342
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/AS1G08_031T02_9000001934_13131cztM0_level2.evt modeM0/AS1G08_031T02_9000001934_13131cztM0_level2_quad_clean.evt
Size (bytes)539,038,080115,989,120
Size514.1 MB 110.6 MB
Events in quadrant A3,818,105755,267
Events in quadrant B5,229,466739,938
Events in quadrant C3,079,705782,871
Events in quadrant D3,718,122742,769

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160773
B0202982
C0144052
D0162802

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70572844.024373%
B705774910.613575%
C7057230.325918%
D70572203.117472%

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 7678 7059 193 193 2.51% 2.73%
B 7678 7059 369 369 4.81% 5.23%
C 7678 7059 1 1 0.01% 0.01%
D 7678 7059 142 142 1.85% 2.01%

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 23 528099 3305.16 786 768 159.5
A 12 189 162547 1013.99 786 768 159.5
A 0 226 38562 236.88 786 768 159.5
B 4 239 1144874 7923.95 765 748 144.4
B 0 85 724182 5010.34 765 748 144.4
B 3 64 228794 1579.39 765 748 144.4
C 15 208 49887 275.12 776 779 178.5
C 13 61 5706 27.6 776 779 178.5
C 14 234 2502 9.65 776 779 178.5
D 1 52 718676 3925.73 764 740 182.9
D 10 157 43408 233.31 764 740 182.9
D 2 69 26654 141.7 764 740 182.9

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