ASTROSAT CZTI

Data Quality Report

Orbit 48122

Creation date: 2024-08-22T12:21:24.785584
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/AS1T05_223T01_9000006402_48122cztM0_level2.fits modeM0/AS1T05_223T01_9000006402_48122cztM0_level2_quad_clean.evt
Size (bytes)1,119,867,840206,867,520
Size1.0 GB 197.3 MB
Events in quadrant A16,651,6071,728,853
Events in quadrant B2,937,662521
Events in quadrant C7,756,2231,763,842
Events in quadrant D12,750,1411,577,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0619931
B0182561
C0363771
D0500961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172975112.954270%
B172981729299.965314%
C172982541.468378%
D172988224.751994%

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 17446 17296 32 32 0.18% 0.19%
B 17447 17297 1 1 0.01% 0.01%
C 17447 17297 43 43 0.25% 0.25%
D 17447 17297 727 727 4.17% 4.20%

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 9203825 23952.5 1851 1810 384.2
A 13 248 135893 349.01 1851 1810 384.2
A 7 3 73866 187.56 1851 1810 384.2
B 2 177 2388221 91063.32 121 118 26.2
B 4 21 22497 853.36 121 118 26.2
B 4 171 20747 786.63 121 118 26.2
C 14 254 482254 1109.34 1847 1850 433.1
C 12 2 20219 42.42 1847 1850 433.1
C 15 208 20041 42.01 1847 1850 433.1
D 7 67 3946403 8724.07 1821 1762 452.2
D 2 37 543922 1199.06 1821 1762 452.2
D 2 165 404652 891.04 1821 1762 452.2

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