ASTROSAT CZTI

Data Quality Report

Orbit 20190704_A05_205T01_9000003012_level2

Creation date: 2019-07-08T12:52:28.605975
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_205T01_9000003012cztM0_level2_bc.evt modeM0/AS1A05_205T01_9000003012cztM0_level2_quad_clean.evt
Size (bytes)4,186,895,0401,603,900,800
Size3.9 GB 1.5 GB
Events in quadrant A26,581,26010,169,839
Events in quadrant B29,669,84410,324,797
Events in quadrant C25,180,1399,951,243
Events in quadrant D36,890,2559,609,172

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02050
B02050
C02050
D02050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025320
B025320
C025320
D025320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02620430
B02716620
C02575850
D02918620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12445420391.638356%
B12445425762.069841%
C12445520611.656020%
D12445428512.290806%

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 144840 124457 15 15 0.01% 0.01%
B 144840 124451 50 50 0.03% 0.04%
C 144840 124464 0 0 0.00% 0.00%
D 144840 124455 420 420 0.29% 0.34%

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 14 111 406524 277.12 6635 6514 1443.5
A 5 16 309824 210.12 6635 6514 1443.5
A 12 96 194574 130.28 6635 6514 1443.5
B 7 220 1578150 1237.82 6750 6589 1269.6
B 0 198 488237 379.36 6750 6589 1269.6
B 0 197 344110 265.84 6750 6589 1269.6
C 3 233 232707 149.79 6451 6434 1510.6
C 10 91 47440 27.15 6451 6434 1510.6
C 8 128 43371 24.45 6451 6434 1510.6
D 1 52 8720962 5685.48 6520 6288 1532.8
D 13 153 611817 395.05 6520 6288 1532.8
D 7 238 602114 388.72 6520 6288 1532.8

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