ASTROSAT CZTI

Data Quality Report

Orbit 47832

Creation date: 2024-08-02T04:27:35.952895
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_081T01_9000006354_47832cztM0_level2.fits modeM0/AS1A13_081T01_9000006354_47832cztM0_level2_quad_clean.evt
Size (bytes)815,230,080121,121,280
Size777.5 MB 115.5 MB
Events in quadrant A8,345,239857,391
Events in quadrant B5,409,209858,054
Events in quadrant C3,895,915823,143
Events in quadrant D11,887,034553,723

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304700
B0223890
C0180100
D0410780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82761972.380377%
B82762683.238279%
C82771191.437719%
D8277269732.584270%

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 8657 8277 5 5 0.06% 0.06%
B 8657 8278 101 101 1.17% 1.22%
C 8658 8279 84 84 0.97% 1.01%
D 8658 8279 2916 2916 33.68% 35.22%

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 4615233 25716.99 871 852 179.4
A 0 31 334448 1859.21 871 852 179.4
A 13 248 19214 102.34 871 852 179.4
B 0 186 1211442 7158.02 864 836 169.1
B 0 200 310892 1833.29 864 836 169.1
B 5 32 269237 1586.99 864 836 169.1
C 12 2 460601 2269.45 860 862 202.6
C 14 254 42755 206.8 860 862 202.6
C 12 250 23658 112.53 860 862 202.6
D 12 33 4277565 22490.54 755 732 190.2
D 12 2 4177362 21963.6 755 732 190.2
D 7 67 223960 1173.89 755 732 190.2

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