ASTROSAT CZTI

Data Quality Report

Orbit 20181007_A05_069T03_9000002416_level2

Creation date: 2018-10-08T12:14:10.962571
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A05_069T03_9000002416cztM0_level2_bc.evt modeM0/AS1A05_069T03_9000002416cztM0_level2_quad_clean.evt
Size (bytes)1,666,379,520600,621,120
Size1.6 GB 572.8 MB
Events in quadrant A12,912,2503,752,206
Events in quadrant B11,503,2983,884,034
Events in quadrant C10,711,8173,698,488
Events in quadrant D12,108,4703,608,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140270
B01043450
C01023530
D01075070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09680
B09680
C09680
D09680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4732326895.682226%
B4732310872.296980%
C473239782.066648%
D4732313442.840057%

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 51878 47325 92 92 0.18% 0.19%
B 51878 47321 31 31 0.06% 0.07%
C 51878 47325 2 2 0.00% 0.00%
D 51878 47324 100 100 0.19% 0.21%

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 15 174 3742844 7230.73 2369 2317 517.3
A 9 143 30027 53.57 2369 2317 517.3
A 15 223 27503 48.69 2369 2317 517.3
B 10 16 530712 1134.46 2442 2371 465.7
B 0 189 350587 747.7 2442 2371 465.7
B 15 35 345077 735.86 2442 2371 465.7
C 3 233 1651115 3004.26 2331 2315 548.8
C 10 169 73574 129.84 2331 2315 548.8
C 7 247 14715 22.59 2331 2315 548.8
D 10 70 1013509 1681.96 2353 2274 601.2
D 1 52 895298 1485.34 2353 2274 601.2
D 12 218 493409 816.89 2353 2274 601.2

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