ASTROSAT CZTI

Data Quality Report

Orbit 20180713_G08_028T01_9000002220_level2

Creation date: 2018-08-01T20:20:11.155827
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/AS1G08_028T01_9000002220cztM0_level2_bc.evt modeM0/AS1G08_028T01_9000002220cztM0_level2_quad_clean.evt
Size (bytes)3,080,764,8001,126,152,000
Size2.9 GB 1.0 GB
Events in quadrant A18,108,7817,125,529
Events in quadrant B25,651,1757,238,079
Events in quadrant C23,819,4596,957,770
Events in quadrant D19,665,1476,697,056

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01837440
B02079430
C01967080
D01909330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018020
B018020
C018020
D018020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8888712631.420905%
B8888729123.276070%
C8888714351.614409%
D8888717231.938416%

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 102443 88880 4 4 0.00% 0.00%
B 102443 88879 118 118 0.12% 0.13%
C 102443 88880 31 31 0.03% 0.03%
D 102443 88882 261 261 0.25% 0.29%

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 12 189 309376 304.59 4617 4524 1000.8
A 11 29 72382 67.8 4617 4524 1000.8
A 0 226 30408 25.86 4617 4524 1000.8
B 10 245 4586993 5188.94 4659 4536 883.1
B 3 64 3135423 3545.25 4659 4536 883.1
B 0 229 122641 133.74 4659 4536 883.1
C 3 233 4054786 4099.4 4506 4447 988.0
C 4 254 1023822 1031.72 4506 4447 988.0
C 3 9 990533 998.03 4506 4447 988.0
D 9 1 1577593 1507.23 4510 4345 1043.8
D 10 70 434024 411.65 4510 4345 1043.8
D 2 234 318961 301.41 4510 4345 1043.8

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