ASTROSAT CZTI

Data Quality Report

Orbit 38430

Creation date: 2024-06-27T21:52:38.247094
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/AS1A12_018T01_9000005386_38430cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38430cztM0_level2_quad_clean.evt
Size (bytes)359,245,44092,047,680
Size342.6 MB 87.8 MB
Events in quadrant A2,981,553634,028
Events in quadrant B3,519,696626,626
Events in quadrant C2,563,201604,792
Events in quadrant D3,820,461550,657

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120932
B0138141
C0108361
D0150071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5308430.810098%
B53082294.314243%
C530860.113037%
D53081803.391108%

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 7071 5309 22 22 0.31% 0.41%
B 7071 5309 151 151 2.14% 2.84%
C 7071 5309 2 2 0.03% 0.04%
D 7071 5309 146 146 2.06% 2.75%

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 387203 3145.8 608 596 122.9
A 9 143 166907 1353.26 608 596 122.9
A 7 3 38657 309.7 608 596 122.9
B 0 183 755451 6714.08 592 577 112.4
B 4 232 303635 2695.49 592 577 112.4
B 0 229 45903 403.14 592 577 112.4
C 15 214 227173 1672.69 584 588 135.5
C 15 159 21836 156.86 584 588 135.5
C 0 10 17100 121.89 584 588 135.5
D 12 235 446331 3142.93 584 567 141.8
D 2 250 373762 2631.27 584 567 141.8
D 13 249 279160 1964.26 584 567 141.8

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter