ASTROSAT CZTI

Data Quality Report

Orbit 50735

Creation date: 2025-02-13T18:01:09.969038
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_9000006450_50735cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50735cztM0_level2_quad_clean.evt
Size (bytes)482,529,60089,441,280
Size460.2 MB 85.3 MB
Events in quadrant A5,345,458578,286
Events in quadrant B3,295,873635,802
Events in quadrant C4,300,390542,119
Events in quadrant D4,430,643511,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02051463
B01419243
C01708847
D01755839

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63042243.553299%
B63041201.903553%
C63063285.201395%
D63052934.647105%

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 7122 6309 115 115 1.61% 1.82%
B 7121 6309 47 47 0.66% 0.74%
C 7123 6310 260 260 3.65% 4.12%
D 7120 6308 212 212 2.98% 3.36%

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 4 4 1223033 7314.96 670 653 167.1
A 12 80 626936 3747.8 670 653 167.1
A 4 3 167280 997.13 670 653 167.1
B 8 128 120700 840.72 665 643 142.8
B 0 213 66545 461.49 665 643 142.8
B 5 172 55490 384.08 665 643 142.8
C 5 10 859464 4865.82 641 636 176.5
C 13 3 175912 993.05 641 636 176.5
C 15 179 113130 637.35 641 636 176.5
D 2 249 408179 2300.73 640 619 177.1
D 1 47 316221 1781.62 640 619 177.1
D 15 169 278922 1571.06 640 619 177.1

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