ASTROSAT CZTI

Data Quality Report

Orbit 20170114_G06_029T01_9000000964_level2

Creation date: 2017-09-22T21:01:16.732991
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_029T01_9000000964cztM0_level2.evt modeM0/AS1G06_029T01_9000000964cztM0_level2_quad_clean.evt
Size (bytes)9,380,911,6801,749,890,880
Size8.7 GB 1.6 GB
Events in quadrant A63,748,23511,182,165
Events in quadrant B68,427,55811,284,260
Events in quadrant C63,586,27511,098,402
Events in quadrant D79,445,18610,400,506

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02743570
B02866550
C02760490
D03200600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026860
B026860
C026860
D026860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13193517951.360518%
B13193523351.769811%
C13193516121.221814%
D13193539743.012089%

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 154020 131962 29 29 0.02% 0.02%
B 154020 131962 366 366 0.24% 0.28%
C 154020 131962 537 537 0.35% 0.41%
D 154020 131961 2348 2348 1.52% 1.78%

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 412570 120.22 16278 15964 3299.0
A 13 251 242596 68.7 16278 15964 3299.0
A 8 15 229304 64.67 16278 15964 3299.0
B 0 214 1452021 466.98 16375 16033 3075.1
B 3 220 1055271 337.95 16375 16033 3075.1
B 7 202 605606 191.73 16375 16033 3075.1
C 9 68 1741848 475.66 15753 15917 3628.5
C 1 16 185723 46.8 15753 15917 3628.5
C 13 61 122417 29.35 15753 15917 3628.5
D 2 216 9107166 2357.86 15663 15210 3856.0
D 8 195 5238555 1354.6 15663 15210 3856.0
D 12 233 3299728 851.79 15663 15210 3856.0

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