ASTROSAT CZTI

Data Quality Report

Orbit 20170820_A03_052T01_9000001480_level2

Creation date: 2017-09-24T16:10:00.537132
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/AS1A03_052T01_9000001480cztM0_level2.evt modeM0/AS1A03_052T01_9000001480cztM0_level2_quad_clean.evt
Size (bytes)5,218,338,240928,172,160
Size4.9 GB 885.2 MB
Events in quadrant A34,865,0555,860,785
Events in quadrant B38,304,0885,807,438
Events in quadrant C33,192,6325,811,057
Events in quadrant D46,806,6745,688,184

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013740
B012670
C012850
D013840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01508430
B01593290
C01493190
D01878860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A721696630.918677%
B7133911611.627441%
C727334110.565080%
D7441414421.937807%

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 91195 77574 7 7 0.01% 0.01%
B 91195 76931 302 302 0.33% 0.39%
C 91195 77833 0 0 0.00% 0.00%
D 91195 77596 742 742 0.81% 0.96%

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 8 15 891124 499.16 8757 8586 1768.1
A 15 239 104529 54.26 8757 8586 1768.1
A 3 1 102253 52.98 8757 8586 1768.1
B 4 239 1450374 884.47 8625 8437 1630.3
B 10 247 840678 510.49 8625 8437 1630.3
B 11 51 836321 507.82 8625 8437 1630.3
C 13 61 63972 28.42 8476 8526 1951.2
C 14 67 62503 27.66 8476 8526 1951.2
C 9 68 35179 13.66 8476 8526 1951.2
D 8 195 5681107 2521.56 8558 8389 2249.7
D 1 52 3335075 1478.73 8558 8389 2249.7
D 2 16 1146206 505.77 8558 8389 2249.7

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