ASTROSAT CZTI

Data Quality Report

Orbit 25708

Creation date: 2024-06-27T19:20:38.042942
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/AS1A09_008T06_9000003748_25708cztM0_level2.evt modeM0/AS1A09_008T06_9000003748_25708cztM0_level2_quad_clean.evt
Size (bytes)310,780,80058,622,400
Size296.4 MB 55.9 MB
Events in quadrant A2,984,399345,691
Events in quadrant B1,939,659413,924
Events in quadrant C1,904,400389,192
Events in quadrant D2,339,141372,618

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111140
B080040
C078970
D094430

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A357757015.935141%
B3577952.655857%
C35771163.242941%
D35771233.438636%

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 4937 3578 483 483 9.78% 13.50%
B 4937 3577 1 1 0.02% 0.03%
C 4937 3578 0 0 0.00% 0.00%
D 4937 3578 35 35 0.71% 0.98%

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 0 13 1298885 14644.97 437 428 88.7
A 13 254 4571 46.73 437 428 88.7
A 3 137 3879 38.92 437 428 88.7
B 0 190 25172 270.92 478 468 91.2
B 0 245 14644 155.46 478 468 91.2
B 0 219 14537 154.29 478 468 91.2
C 14 238 73152 679.05 459 462 107.0
C 3 233 38875 358.84 459 462 107.0
C 1 16 3625 29.55 459 462 107.0
D 8 195 256119 2297.15 459 445 111.3
D 7 80 239776 2150.31 459 445 111.3
D 2 244 59430 529.96 459 445 111.3

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