ASTROSAT CZTI

Data Quality Report

Orbit 46457

Creation date: 2024-11-13T05:14:37.355492
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/AS1A13_037T01_9000006212_46457cztM0_level2.fits modeM0/AS1A13_037T01_9000006212_46457cztM0_level2_quad_clean.evt
Size (bytes)438,958,08099,123,840
Size418.6 MB 94.5 MB
Events in quadrant A5,468,086662,871
Events in quadrant B3,240,488681,532
Events in quadrant C3,490,931649,120
Events in quadrant D3,572,441579,313

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204922
B0139091
C0149211
D0152631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61391382.247923%
B61391091.775533%
C61401272.068404%
D61402544.136808%

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 7149 6140 22 22 0.31% 0.36%
B 7149 6140 41 41 0.57% 0.67%
C 7150 6141 60 60 0.84% 0.98%
D 7150 6141 213 213 2.98% 3.47%

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 10 83 2800653 19963.68 675 660 140.3
A 2 79 16929 116.0 675 660 140.3
A 0 243 12889 87.19 675 660 140.3
B 5 32 212060 1577.69 677 656 134.0
B 10 128 118479 879.3 677 656 134.0
B 0 190 65080 480.79 677 656 134.0
C 9 54 821347 5221.29 663 666 157.2
C 3 233 55768 350.57 663 666 157.2
C 14 254 13755 83.27 663 666 157.2
D 2 249 530586 3274.4 644 623 161.9
D 1 52 306967 1892.76 644 623 161.9
D 13 249 86592 531.16 644 623 161.9

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