ASTROSAT CZTI

Data Quality Report

Orbit 20160803_G05_191T01_9000000572_level2

Creation date: 2017-10-24T15:47:43.165906
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/AS1G05_191T01_9000000572cztM0_level2.evt modeM0/AS1G05_191T01_9000000572cztM0_level2_quad_clean.evt
Size (bytes)4,344,053,760749,174,400
Size4.0 GB 714.5 MB
Events in quadrant A26,887,1594,956,535
Events in quadrant B28,290,2334,974,933
Events in quadrant C25,984,0254,891,378
Events in quadrant D46,698,9434,102,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01155710
B01196980
C01151700
D01766660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011120
B011140
C011140
D011140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690
B0690
C0690
D0690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A548799531.736548%
B5487711392.075551%
C549026201.129285%
D54806862115.730030%

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 61753 54984 85 85 0.14% 0.15%
B 61753 54991 195 195 0.32% 0.35%
C 61753 54990 16 16 0.03% 0.03%
D 61753 54901 7216 7216 11.69% 13.14%

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 15 174 590465 436.57 6626 6501 1337.6
A 13 14 385805 283.57 6626 6501 1337.6
A 8 15 175860 126.61 6626 6501 1337.6
B 2 249 692999 541.32 6678 6537 1268.1
B 10 16 582257 453.99 6678 6537 1268.1
B 14 167 353151 273.33 6678 6537 1268.1
C 14 48 619477 411.77 6439 6495 1488.6
C 9 247 70304 42.86 6439 6495 1488.6
C 9 54 53308 31.45 6439 6495 1488.6
D 13 235 21203218 14948.57 5857 5693 1418.0
D 10 15 1107924 777.3 5857 5693 1418.0
D 13 239 463954 323.17 5857 5693 1418.0

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