ASTROSAT CZTI

Data Quality Report

Orbit 20180626_C03_005T02_9000002192_level2

Creation date: 2018-06-30T10:54:19.845450
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/AS1C03_005T02_9000002192cztM0_level2_bc.evt modeM0/AS1C03_005T02_9000002192cztM0_level2_quad_clean.evt
Size (bytes)2,496,041,2801,121,480,640
Size2.3 GB 1.0 GB
Events in quadrant A15,430,7207,380,616
Events in quadrant B17,497,4887,345,886
Events in quadrant C17,879,7207,283,095
Events in quadrant D19,973,1727,119,699

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014360
B014360
C014360
D014360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01472140
B01554340
C01505010
D01616410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A706306760.957100%
B7063011651.649441%
C706305810.822597%
D7063010891.541838%

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 81671 70632 1 1 0.00% 0.00%
B 81671 70630 55 55 0.07% 0.08%
C 81671 70632 20 20 0.02% 0.03%
D 81671 70632 170 170 0.21% 0.24%

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 12 189 727939 894.05 3734 3670 810.1
A 11 29 113419 135.48 3734 3670 810.1
A 9 143 71721 84.0 3734 3670 810.1
B 3 64 971103 1400.29 3697 3611 690.9
B 0 229 545560 784.39 3697 3611 690.9
B 0 189 470770 676.14 3697 3611 690.9
C 3 233 3092518 3834.33 3625 3589 805.6
C 0 207 457551 563.51 3625 3589 805.6
C 7 247 67230 79.0 3625 3589 805.6
D 7 254 1891226 2136.39 3663 3571 883.6
D 12 110 1806314 2040.29 3663 3571 883.6
D 13 104 425741 477.8 3663 3571 883.6

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