ASTROSAT CZTI

Data Quality Report

Orbit 46536

Creation date: 2024-06-27T23:24:24.445824
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/AS1A13_091T05_9000006224_46536cztM0_level2.fits modeM0/AS1A13_091T05_9000006224_46536cztM0_level2_quad_clean.evt
Size (bytes)369,904,32063,676,800
Size352.8 MB 60.7 MB
Events in quadrant A4,278,464423,476
Events in quadrant B2,257,677444,983
Events in quadrant C1,879,655431,058
Events in quadrant D4,950,064333,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153731
B094411
C087461
D0176311

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A42003007.142857%
B42001864.428571%
C42011112.642228%
D420183719.923828%

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 4920 4200 58 58 1.18% 1.38%
B 4920 4200 15 15 0.30% 0.36%
C 4921 4201 1 1 0.02% 0.02%
D 4921 4201 666 666 13.53% 15.85%

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 2027055 20476.27 469 458 99.0
A 9 191 349620 3527.85 469 458 99.0
A 13 248 55750 558.66 469 458 99.0
B 3 112 95100 992.7 472 457 95.3
B 10 128 51169 531.91 472 457 95.3
B 4 170 46933 487.48 472 457 95.3
C 9 54 14327 122.52 472 473 113.1
C 3 233 10796 91.3 472 473 113.1
C 14 254 7088 58.5 472 473 113.1
D 8 176 1355081 12194.93 437 422 111.1
D 13 249 1315596 11839.48 437 422 111.1
D 13 138 456611 4106.71 437 422 111.1

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