ASTROSAT CZTI

Data Quality Report

Orbit 20171101_G08_044T01_9000001658_level2

Creation date: 2017-11-06T22:00:39.555359
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/AS1G08_044T01_9000001658cztM0_level2.evt modeM0/AS1G08_044T01_9000001658cztM0_level2_quad_clean.evt
Size (bytes)1,458,936,000197,415,360
Size1.4 GB 188.3 MB
Events in quadrant A8,729,9551,266,616
Events in quadrant B11,745,2581,244,681
Events in quadrant C7,156,4451,282,778
Events in quadrant D15,490,9231,097,979

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0359130
B0448630
C0322700
D0565300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157404893.106734%
B1574014038.913596%
C157401320.838628%
D15740258216.404066%

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 17690 15743 183 183 1.03% 1.16%
B 17690 15743 843 843 4.77% 5.35%
C 17690 15743 4 4 0.02% 0.03%
D 17690 15743 2387 2387 13.49% 15.16%

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 14 238 816281 2158.81 1844 1799 377.3
A 8 15 614526 1624.05 1844 1799 377.3
A 15 174 66110 170.46 1844 1799 377.3
B 4 239 2270767 6491.58 1810 1763 349.5
B 3 64 1876651 5364.02 1810 1763 349.5
B 15 204 171897 486.75 1810 1763 349.5
C 9 204 80643 187.55 1807 1815 420.3
C 14 234 16171 34.16 1807 1815 420.3
C 13 61 13344 27.43 1807 1815 420.3
D 13 152 2571938 6280.21 1687 1640 409.3
D 7 80 2481532 6059.31 1687 1640 409.3
D 1 52 1507596 3679.62 1687 1640 409.3

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