ASTROSAT CZTI

Data Quality Report

Orbit 20190418_A05_075T10_9000002842_level2

Creation date: 2019-04-20T15:25:22.468801
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_075T10_9000002842cztM0_level2_bc.evt modeM0/AS1A05_075T10_9000002842cztM0_level2_quad_clean.evt
Size (bytes)355,642,560166,553,280
Size339.2 MB 158.8 MB
Events in quadrant A2,206,6701,099,888
Events in quadrant B2,247,1901,130,038
Events in quadrant C2,747,9621,104,151
Events in quadrant D2,934,0441,071,917

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201490
B0203200
C0225030
D0224030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92211371.485739%
B92211611.746015%
C92212422.624444%
D92211601.735170%

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 11771 9220 2 2 0.02% 0.02%
B 11771 9220 0 0 0.00% 0.00%
C 11771 9219 0 0 0.00% 0.00%
D 11771 9220 8 8 0.07% 0.09%

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 11 29 32255 263.8 557 549 120.2
A 9 143 30040 245.37 557 549 120.2
A 13 254 10943 86.48 557 549 120.2
B 3 64 27981 261.84 571 560 104.7
B 0 229 9169 82.21 571 560 104.7
B 0 189 8324 74.14 571 560 104.7
C 3 233 603324 4633.16 557 558 130.1
C 13 61 3234 20.57 557 558 130.1
C 6 96 2749 16.84 557 558 130.1
D 1 52 567523 4460.7 563 545 127.1
D 11 176 182327 1430.17 563 545 127.1
D 2 234 41210 319.93 563 545 127.1

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