ASTROSAT CZTI

Data Quality Report

Orbit 03867

Creation date: 2024-06-27T14:34:34.584154
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_083T01_9000000494_03867cztM0_level2.evt modeM0/AS1G05_083T01_9000000494_03867cztM0_level2_quad_clean.evt
Size (bytes)497,597,76097,896,960
Size474.5 MB 93.4 MB
Events in quadrant A3,496,768630,991
Events in quadrant B3,449,902627,079
Events in quadrant C4,142,218617,024
Events in quadrant D3,510,614607,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152303
B0148372
C0173352
D0156482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69171852.674570%
B69171321.908342%
C69171922.775770%
D69171792.587827%

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 7657 6917 39 39 0.51% 0.56%
B 7657 6917 6 6 0.08% 0.09%
C 7657 6917 16 16 0.21% 0.23%
D 7657 6917 91 91 1.19% 1.32%

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 233499 1462.36 779 761 159.2
A 8 15 122507 764.96 779 761 159.2
A 0 118 76933 478.61 779 761 159.2
B 15 204 224640 1509.44 783 764 148.3
B 0 187 72575 484.17 783 764 148.3
B 15 85 59765 397.8 783 764 148.3
C 2 53 1169080 6760.88 747 751 172.8
C 14 67 27263 153.42 747 751 172.8
C 8 128 7708 40.26 747 751 172.8
D 2 32 232587 1275.56 751 729 181.8
D 2 33 118384 647.27 751 729 181.8
D 13 248 111474 609.26 751 729 181.8

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
Veto Counter