ASTROSAT CZTI

Data Quality Report

Orbit 20190428_A05_025T17_9000002858_level2

Creation date: 2019-04-29T12:06:12.013469
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/AS1A05_025T17_9000002858cztM0_level2_bc.evt modeM0/AS1A05_025T17_9000002858cztM0_level2_quad_clean.evt
Size (bytes)787,144,320297,204,480
Size750.7 MB 283.4 MB
Events in quadrant A3,341,0722,086,508
Events in quadrant B3,565,9462,102,235
Events in quadrant C3,157,1792,003,193
Events in quadrant D12,789,2051,815,635

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306960
B0313400
C0306810
D0668730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A143981781.236283%
B143982251.562717%
C143962551.771325%
D14395242716.860021%

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 17779 14396 0 0 0.00% 0.00%
B 17779 14396 8 8 0.04% 0.06%
C 17779 14396 0 0 0.00% 0.00%
D 17779 14397 286 286 1.61% 1.99%

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 4 2 30470 164.66 851 841 179.9
A 15 174 17336 91.67 851 841 179.9
A 13 254 16402 86.48 851 841 179.9
B 3 64 68414 425.6 850 835 158.8
B 4 216 44067 272.27 850 835 158.8
B 6 36 43143 266.45 850 835 158.8
C 3 233 25453 129.69 807 806 190.0
C 9 54 7971 37.7 807 806 190.0
C 8 128 7360 34.48 807 806 190.0
D 10 66 5836791 31559.07 780 757 184.9
D 7 238 1564978 8458.72 780 757 184.9
D 1 52 1549845 8376.88 780 757 184.9

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