ASTROSAT CZTI

Data Quality Report

Orbit 25619

Creation date: 2024-06-27T19:19:36.186120
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/AS1A09_081T01_9000003730_25619cztM0_level2.evt modeM0/AS1A09_081T01_9000003730_25619cztM0_level2_quad_clean.evt
Size (bytes)484,404,48098,562,240
Size462.0 MB 94.0 MB
Events in quadrant A4,167,327637,935
Events in quadrant B3,245,119682,466
Events in quadrant C3,160,845634,202
Events in quadrant D3,682,620603,966

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164210
B0134840
C0131400
D0150380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61152053.352412%
B6115330.539657%
C6115610.997547%
D6115580.948487%

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 7425 6116 162 162 2.18% 2.65%
B 7425 6116 2 2 0.03% 0.03%
C 7425 6116 0 0 0.00% 0.00%
D 7425 6116 47 47 0.63% 0.77%

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 13 671592 4248.38 790 776 157.9
A 8 192 417937 2641.95 790 776 157.9
A 6 16 21860 133.53 790 776 157.9
B 0 219 21296 136.76 807 788 150.0
B 0 190 19085 122.02 807 788 150.0
B 12 111 17309 110.17 807 788 150.0
C 14 238 126518 701.27 771 779 179.3
C 3 233 19019 101.73 771 779 179.3
C 0 10 8605 43.65 771 779 179.3
D 8 195 316880 1707.69 767 743 185.1
D 1 52 237896 1281.04 767 743 185.1
D 13 174 111580 598.71 767 743 185.1

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