ASTROSAT CZTI

Data Quality Report

Orbit 20170202_G06_137T02_9000001002_level2

Creation date: 2017-09-23T01:04:19.909903
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_137T02_9000001002cztM0_level2.evt modeM0/AS1G06_137T02_9000001002cztM0_level2_quad_clean.evt
Size (bytes)4,603,959,360804,228,480
Size4.3 GB 767.0 MB
Events in quadrant A33,387,2324,950,547
Events in quadrant B31,145,7005,167,170
Events in quadrant C29,737,0495,113,221
Events in quadrant D40,831,2774,725,110

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013080
B013080
C013080
D013080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01429580
B01364500
C01334790
D01656670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6418816632.590827%
B641888921.389668%
C641897221.124803%
D6419127914.347962%

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 74927 64194 738 738 0.98% 1.15%
B 74927 64195 29 29 0.04% 0.05%
C 74927 64198 96 96 0.13% 0.15%
D 74927 64196 1910 1910 2.55% 2.98%

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 15 234 2374654 1565.2 7502 7350 1512.5
A 8 15 1572183 1034.63 7502 7350 1512.5
A 14 111 212627 135.72 7502 7350 1512.5
B 0 214 713612 485.57 7668 7486 1454.2
B 4 81 400815 270.47 7668 7486 1454.2
B 11 51 161158 105.67 7668 7486 1454.2
C 1 16 271745 154.96 7415 7453 1705.6
C 9 68 264468 150.69 7415 7453 1705.6
C 7 247 195860 110.46 7415 7453 1705.6
D 2 216 3989537 2235.49 7265 7043 1781.5
D 1 239 3006389 1683.62 7265 7043 1781.5
D 1 20 2597519 1454.11 7265 7043 1781.5

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