ASTROSAT CZTI

Data Quality Report

Orbit 20180110_A04_130T04_9000001832_level2

Creation date: 2018-07-31T13:26:10.133080
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/AS1A04_130T04_9000001832cztM0_level2_bc.evt modeM0/AS1A04_130T04_9000001832cztM0_level2_quad_clean.evt
Size (bytes)1,273,184,640384,549,120
Size1.2 GB 366.7 MB
Events in quadrant A10,127,0592,373,314
Events in quadrant B8,664,1972,416,883
Events in quadrant C6,967,5002,379,668
Events in quadrant D10,586,4872,248,346

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06640
B06640
C06640
D06640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0849640
B0741260
C0682450
D0798450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A324198002.467689%
B324198652.668188%
C324193721.147475%
D3241912963.997656%

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 38780 32422 2 2 0.01% 0.01%
B 38780 32420 6 6 0.02% 0.02%
C 38780 32420 5 5 0.01% 0.02%
D 38780 32420 264 264 0.68% 0.81%

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 1448758 3939.86 1688 1655 367.3
A 13 251 1378978 3749.88 1688 1655 367.3
A 1 162 570462 1548.63 1688 1655 367.3
B 4 239 1031164 3208.2 1700 1658 320.9
B 10 245 481390 1494.97 1700 1658 320.9
B 0 219 112164 344.36 1700 1658 320.9
C 15 208 411449 1146.01 1640 1615 357.6
C 14 234 125401 346.14 1640 1615 357.6
C 0 207 11093 26.5 1640 1615 357.6
D 1 52 3043709 8085.01 1637 1578 376.3
D 13 104 241350 637.24 1637 1578 376.3
D 5 222 224931 593.6 1637 1578 376.3

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