ASTROSAT CZTI

Data Quality Report

Orbit 40165

Creation date: 2024-06-27T22:13:20.723953
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_068T01_9000005526_40165cztM0_level2.fits modeM0/AS1A12_068T01_9000005526_40165cztM0_level2_quad_clean.evt
Size (bytes)1,341,400,320229,841,280
Size1.2 GB 219.2 MB
Events in quadrant A9,170,2681,634,269
Events in quadrant B7,871,6621,700,668
Events in quadrant C21,924,4061,082,272
Events in quadrant D9,490,3191,472,836

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0470

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364665
B0337294
C0752914
D0387904

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154823041.963571%
B154821961.265986%
C15482560936.229169%
D154825273.403953%

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 19809 15483 268 268 1.35% 1.73%
B 19809 15482 113 113 0.57% 0.73%
C 19809 15481 5655 5655 28.55% 36.53%
D 19809 15482 537 537 2.71% 3.47%

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 1232359 3537.03 1711 1676 347.9
A 13 248 1058348 3036.91 1711 1676 347.9
A 2 79 115669 327.62 1711 1676 347.9
B 5 172 434947 1310.19 1714 1665 330.7
B 5 255 321881 968.29 1714 1665 330.7
B 4 171 121401 362.07 1714 1665 330.7
C 9 187 15566485 46070.04 1449 1458 337.9
C 15 214 561231 1656.84 1449 1458 337.9
C 14 254 64528 186.68 1449 1458 337.9
D 12 227 1562670 3821.05 1668 1620 408.5
D 13 249 472667 1153.0 1668 1620 408.5
D 9 19 342699 834.87 1668 1620 408.5

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