ASTROSAT CZTI

Data Quality Report

Orbit 20170416_G07_076T04_9000001172_level2

Creation date: 2017-09-23T18:03:53.117908
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/AS1G07_076T04_9000001172cztM0_level2.evt modeM0/AS1G07_076T04_9000001172cztM0_level2_quad_clean.evt
Size (bytes)979,626,240172,074,240
Size934.2 MB 164.1 MB
Events in quadrant A6,893,1121,063,662
Events in quadrant B7,826,9831,066,917
Events in quadrant C6,851,3301,046,903
Events in quadrant D7,105,0951,023,786

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305450
B0328550
C0305720
D0314550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146334893.341762%
B146335633.847468%
C146333522.405522%
D146333682.514864%

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 15433 14634 0 0 0.00% 0.00%
B 15433 14634 38 38 0.25% 0.26%
C 15433 14635 4 4 0.03% 0.03%
D 15433 14635 27 27 0.17% 0.18%

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 0 226 16606 40.68 1790 1746 365.3
A 12 194 16098 39.29 1790 1746 365.3
A 15 236 8484 18.45 1790 1746 365.3
B 4 48 605337 1746.73 1790 1748 345.6
B 0 214 125855 359.15 1790 1748 345.6
B 4 81 54854 153.68 1790 1748 345.6
C 1 16 24821 56.86 1742 1744 405.9
C 8 128 20442 46.07 1742 1744 405.9
C 13 61 13333 28.55 1742 1744 405.9
D 1 52 118379 250.96 1733 1686 465.0
D 2 14 88306 186.29 1733 1686 465.0
D 12 233 71733 150.64 1733 1686 465.0

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