ASTROSAT CZTI

Data Quality Report

Orbit 20170816_G07_011T04_9000001466_level2

Creation date: 2017-10-18T09:27:56.775679
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_011T04_9000001466cztM0_level2.evt modeM0/AS1G07_011T04_9000001466cztM0_level2_quad_clean.evt
Size (bytes)1,009,543,680192,695,040
Size962.8 MB 183.8 MB
Events in quadrant A7,168,9431,235,364
Events in quadrant B7,194,8091,211,283
Events in quadrant C7,210,2021,216,853
Events in quadrant D8,024,6901,177,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301110
B0296520
C0301060
D0328540

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03090
B03050
C03080
D03080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144271410.977334%
B140281591.133447%
C14509980.675443%
D145351310.901273%

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 19051 14886 0 0 0.00% 0.00%
B 19051 14514 5 5 0.03% 0.03%
C 19051 14956 2 2 0.01% 0.01%
D 19051 14805 26 26 0.14% 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 16720 40.17 1858 1826 370.8
A 13 253 16496 39.57 1858 1826 370.8
A 12 194 15030 35.61 1858 1826 370.8
B 0 219 53799 153.22 1817 1778 339.5
B 0 214 50190 142.59 1817 1778 339.5
B 12 111 37577 105.44 1817 1778 339.5
C 14 67 50943 117.62 1825 1843 417.4
C 14 234 44483 102.15 1825 1843 417.4
C 13 61 13552 28.05 1825 1843 417.4
D 8 195 390285 902.72 1822 1779 430.4
D 1 52 304545 703.5 1822 1779 430.4
D 4 95 163705 376.24 1822 1779 430.4

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