ASTROSAT CZTI

Data Quality Report

Orbit 43621

Creation date: 2024-06-27T22:53:46.967578
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_095T02_9000005892_43621cztM0_level2.fits modeM0/AS1A12_095T02_9000005892_43621cztM0_level2_quad_clean.evt
Size (bytes)1,086,232,32094,259,520
Size1.0 GB 89.9 MB
Events in quadrant A4,219,250761,597
Events in quadrant B5,137,979760,764
Events in quadrant C15,572,780386,561
Events in quadrant D14,769,459479,215

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170742
B0198132
C0508532
D0483602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65961712.592480%
B65975047.639836%
C6597550183.386388%
D6597531080.491132%

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 7516 6597 29 29 0.39% 0.44%
B 7517 6598 271 271 3.61% 4.11%
C 7516 6596 5232 5232 69.61% 79.32%
D 7517 6597 4881 4881 64.93% 73.99%

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 861030 5360.44 777 760 160.5
A 15 222 101103 625.25 777 760 160.5
A 15 223 86149 532.07 777 760 160.5
B 5 235 1099714 7318.21 765 742 150.2
B 4 206 301774 2004.61 765 742 150.2
B 0 219 172177 1141.61 765 742 150.2
C 15 142 3963851 40465.0 415 417 97.9
C 15 174 3778593 38573.59 415 417 97.9
C 15 126 3711739 37891.04 415 417 97.9
D 8 192 6472286 42185.04 550 529 153.4
D 4 216 2100308 13687.05 550 529 153.4
D 4 212 854438 5566.06 550 529 153.4

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