ASTROSAT CZTI

Data Quality Report

Orbit 03831

Creation date: 2024-06-27T14:34:07.264277
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/AS1G05_189T01_9000000492_03831cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03831cztM0_level2_quad_clean.evt
Size (bytes)430,421,76068,512,320
Size410.5 MB 65.3 MB
Events in quadrant A3,918,559409,899
Events in quadrant B3,048,407420,049
Events in quadrant C2,800,214412,785
Events in quadrant D2,849,030401,300

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160692
B0130871
C0128501
D0131231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61612974.820646%
B6161621.006330%
C6161490.795325%
D6161691.119948%

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 7191 6161 184 184 2.56% 2.99%
B 7191 6161 3 3 0.04% 0.05%
C 7191 6161 0 0 0.00% 0.00%
D 7191 6161 26 26 0.36% 0.42%

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 15 234 1155341 8048.75 700 685 143.5
A 13 251 49878 342.91 700 685 143.5
A 8 15 14571 96.79 700 685 143.5
B 15 204 99287 712.27 718 700 138.4
B 14 167 61798 441.42 718 700 138.4
B 10 16 47853 340.67 718 700 138.4
C 2 53 86413 523.68 689 693 163.7
C 12 4 8004 44.66 689 693 163.7
C 13 61 5795 31.17 689 693 163.7
D 13 248 173273 1032.22 684 664 167.2
D 2 14 37468 220.09 684 664 167.2
D 2 32 17866 102.87 684 664 167.2

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