ASTROSAT CZTI

Data Quality Report

Orbit 51210

Creation date: 2025-03-17T17:31:57.938245
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/AS1C07_001T01_9000006454_51210cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51210cztM0_level2_quad_clean.evt
Size (bytes)726,543,36095,895,360
Size692.9 MB 91.5 MB
Events in quadrant A4,515,431664,086
Events in quadrant B6,728,446643,598
Events in quadrant C9,091,524517,474
Events in quadrant D5,987,943565,016

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184810
B0249980
C0321150
D0229870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73701682.279512%
B7370105914.369064%
C7370181324.599729%
D73707139.674355%

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 7370 7370 111 111 1.51% 1.51%
B 7370 7370 867 867 11.76% 11.76%
C 7370 7370 1640 1640 22.25% 22.25%
D 7370 7370 656 656 8.90% 8.90%

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 12 3 485034 2574.72 759 740 188.1
A 13 248 126405 668.09 759 740 188.1
A 12 250 120833 638.47 759 740 188.1
B 5 172 2137813 13954.76 712 686 153.1
B 8 128 377874 2462.92 712 686 153.1
B 10 254 337118 2196.79 712 686 153.1
C 4 12 4172252 22653.74 675 670 184.1
C 4 13 768356 4168.91 675 670 184.1
C 15 158 542605 2942.97 675 670 184.1
D 2 62 1095198 5443.87 707 682 201.1
D 2 216 353550 1755.08 707 682 201.1
D 2 153 281009 1394.28 707 682 201.1

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