ASTROSAT CZTI

Data Quality Report

Orbit 20171209_G08_083T04_9000001760_level2

Creation date: 2018-01-05T15:57:22.560095
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_083T04_9000001760cztM0_level2_bc.evt modeM0/AS1G08_083T04_9000001760cztM0_level2_quad_clean.evt
Size (bytes)1,192,472,640396,181,440
Size1.1 GB 377.8 MB
Events in quadrant A7,417,0382,493,921
Events in quadrant B10,494,2342,451,882
Events in quadrant C5,777,5772,540,913
Events in quadrant D10,348,5552,422,719

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0689290
B0791480
C0622340
D0742880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06220
B06220
C06220
D06220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A303998572.819172%
B3039915715.167933%
C303994221.388204%
D3039910013.292871%

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 33875 30401 20 20 0.06% 0.07%
B 33875 30400 55 55 0.16% 0.18%
C 33875 30401 4 4 0.01% 0.01%
D 33875 30402 116 116 0.34% 0.38%

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 667956 2065.75 1461 1429 322.7
A 7 144 663898 2053.18 1461 1429 322.7
A 1 162 266624 821.91 1461 1429 322.7
B 4 239 2189582 7729.03 1454 1411 283.1
B 3 64 1597687 5638.35 1454 1411 283.1
B 15 204 427966 1506.67 1454 1411 283.1
C 12 4 37675 108.29 1463 1431 334.7
C 13 61 8770 21.93 1463 1431 334.7
C 8 128 6072 13.87 1463 1431 334.7
D 8 195 1923815 5072.56 1450 1401 379.0
D 1 52 1299584 3425.44 1450 1401 379.0
D 13 104 277814 729.35 1450 1401 379.0

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