ASTROSAT CZTI

Data Quality Report

Orbit 20161218_G06_164T01_9000000896_level2

Creation date: 2017-09-22T13:09:59.858268
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/AS1G06_164T01_9000000896cztM0_level2.evt modeM0/AS1G06_164T01_9000000896cztM0_level2_quad_clean.evt
Size (bytes)1,191,654,720216,253,440
Size1.1 GB 206.2 MB
Events in quadrant A7,374,0231,379,262
Events in quadrant B8,547,2131,367,244
Events in quadrant C7,429,5441,348,597
Events in quadrant D11,606,7261,299,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338850
B0367090
C0345320
D0461450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B12513186377920
C12513186377920
D12513186377920

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03380
C03400
D03380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16740970.579450%
B167432561.528997%
C167381370.818497%
D167372911.738663%

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 17903 16766 3 3 0.02% 0.02%
B 17903 16771 91 91 0.51% 0.54%
C 17903 16763 61 61 0.34% 0.36%
D 17903 16772 178 178 0.99% 1.06%

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 8 15 75523 192.61 1881 1838 382.6
A 14 111 34073 84.26 1881 1838 382.6
A 13 251 19625 46.49 1881 1838 382.6
B 4 48 298451 828.04 1888 1840 358.2
B 15 204 280973 779.25 1888 1840 358.2
B 0 219 230213 637.54 1888 1840 358.2
C 9 54 312291 743.45 1813 1818 417.6
C 1 16 23180 51.15 1813 1818 417.6
C 13 61 14497 30.36 1813 1818 417.6
D 8 195 3314739 7526.41 1811 1754 440.2
D 2 33 566831 1283.74 1811 1754 440.2
D 14 34 422303 955.4 1811 1754 440.2

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