ASTROSAT CZTI

Data Quality Report

Orbit 20171014_A04_053T04_9000001614_level2

Creation date: 2017-10-18T13:25:18.507454
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_053T04_9000001614cztM0_level2.evt modeM0/AS1A04_053T04_9000001614cztM0_level2_quad_clean.evt
Size (bytes)466,093,44083,093,760
Size444.5 MB 79.2 MB
Events in quadrant A3,372,632520,682
Events in quadrant B3,914,416516,268
Events in quadrant C2,923,813509,241
Events in quadrant D3,438,567491,909

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152960
B0164400
C0138710
D0152110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6864290.422494%
B68651912.782229%
C686370.101996%
D6865490.713765%

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 7606 6867 0 0 0.00% 0.00%
B 7606 6866 80 80 1.05% 1.17%
C 7606 6867 0 0 0.00% 0.00%
D 7606 6867 37 37 0.49% 0.54%

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 413459 2625.64 766 751 157.2
A 11 29 9758 57.3 766 751 157.2
A 0 226 6861 38.87 766 751 157.2
B 4 239 818843 5548.22 766 745 147.5
B 0 214 42683 284.42 766 745 147.5
B 3 189 29061 192.03 766 745 147.5
C 8 128 8260 43.2 746 748 173.9
C 13 61 5557 27.65 746 748 173.9
C 8 112 4658 22.48 746 748 173.9
D 11 129 203560 1147.4 736 717 176.8
D 1 52 138289 778.19 736 717 176.8
D 10 253 115781 650.87 736 717 176.8

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