ASTROSAT CZTI

Data Quality Report

Orbit 20160304_T01_030T01_9000000358_level2

Creation date: 2017-11-02T11:03:19.328153
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/AS1T01_030T01_9000000358cztM0_level2.evt modeM0/AS1T01_030T01_9000000358cztM0_level2_quad_clean.evt
Size (bytes)10,267,007,0401,790,389,440
Size9.6 GB 1.7 GB
Events in quadrant A77,321,59011,031,832
Events in quadrant B74,486,33911,324,990
Events in quadrant C73,388,68010,996,159
Events in quadrant D75,553,65510,531,554

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030680
B030680
C030680
D030680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03302240
B03207980
C03203450
D03336690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15099127911.848455%
B15099325371.680210%
C15099319261.275556%
D15099227351.811354%

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 183940 151026 554 554 0.30% 0.37%
B 183940 151027 306 306 0.17% 0.20%
C 183940 151027 265 265 0.14% 0.18%
D 183940 151026 1114 1114 0.61% 0.74%

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 14 4468086 1223.06 18086 17726 3638.7
A 14 235 966924 260.86 18086 17726 3638.7
A 3 1 568747 151.43 18086 17726 3638.7
B 6 36 1018076 289.11 18353 17961 3459.3
B 4 48 926197 262.55 18353 17961 3459.3
B 8 3 406970 112.45 18353 17961 3459.3
C 5 234 1678279 410.05 17543 17683 4049.7
C 7 220 1034789 251.16 17543 17683 4049.7
C 14 223 517520 123.43 17543 17683 4049.7
D 2 216 3014097 716.33 17429 17019 4184.0
D 1 20 2412493 572.54 17429 17019 4184.0
D 9 66 1284525 302.94 17429 17019 4184.0

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