ASTROSAT CZTI

Data Quality Report

Orbit 54609

Creation date: 2025-11-01T15:58:15.174253
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/AS1A14_066T07_9000006522_54609cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54609cztM0_level2_quad_clean.evt
Size (bytes)586,074,24096,396,480
Size558.9 MB 91.9 MB
Events in quadrant A7,437,599595,001
Events in quadrant B5,383,865642,789
Events in quadrant C4,697,350612,329
Events in quadrant D3,632,761580,636

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269020
B0209300
C0188720
D0156810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A700499614.220445%
B70046449.194746%
C70041371.956025%
D70041081.541976%

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 7004 7004 965 965 13.78% 13.78%
B 7003 7003 505 505 7.21% 7.21%
C 7004 7004 122 122 1.74% 1.74%
D 7004 7004 113 113 1.61% 1.61%

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 3 14 3936707 22078.75 713 693 178.3
A 0 8 249252 1394.27 713 693 178.3
A 11 3 247262 1383.11 713 693 178.3
B 5 172 1908462 12402.16 709 682 153.8
B 1 207 226165 1465.83 709 682 153.8
B 10 28 140029 905.87 709 682 153.8
C 4 5 1152087 5899.28 715 709 195.2
C 6 223 294308 1504.3 715 709 195.2
C 15 147 159476 813.47 715 709 195.2
D 2 252 301941 1487.74 715 683 202.5
D 2 172 207276 1020.24 715 683 202.5
D 5 173 60865 297.2 715 683 202.5

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