ASTROSAT CZTI

Data Quality Report

Orbit 20160821_G05_009T02_9000000618_level2

Creation date: 2017-10-30T14:48:22.205005
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/AS1G05_009T02_9000000618cztM0_level2.evt modeM0/AS1G05_009T02_9000000618cztM0_level2_quad_clean.evt
Size (bytes)6,061,296,960956,105,280
Size5.6 GB 911.8 MB
Events in quadrant A43,065,1635,942,341
Events in quadrant B44,584,1746,000,306
Events in quadrant C36,028,2405,959,749
Events in quadrant D54,495,8035,571,367

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016360
B016400
C016420
D016260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01837060
B01862470
C01645280
D02183510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7998230283.785852%
B7996025713.215358%
C800317120.889655%
D7986049966.255948%

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 94915 80693 1880 1880 1.98% 2.33%
B 94915 80653 1095 1095 1.15% 1.36%
C 94915 80699 23 23 0.02% 0.03%
D 94915 80593 3584 3584 3.78% 4.45%

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 13 251 6798515 3653.79 9208 9012 1858.2
A 0 50 411230 216.45 9208 9012 1858.2
A 8 15 289450 150.92 9208 9012 1858.2
B 10 16 5127919 2858.49 9381 9160 1790.7
B 4 80 1241029 687.92 9381 9160 1790.7
B 15 204 761842 420.32 9381 9160 1790.7
C 9 247 170188 77.12 9095 9135 2088.3
C 12 4 161203 72.82 9095 9135 2088.3
C 1 16 132297 58.98 9095 9135 2088.3
D 1 31 4523917 2090.0 8872 8616 2160.4
D 13 235 3647807 1684.47 8872 8616 2160.4
D 2 136 3417303 1577.78 8872 8616 2160.4

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