ASTROSAT CZTI

Data Quality Report

Orbit 20180516_G08_069T01_9000002102_level2

Creation date: 2018-05-25T13:58:46.770311
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_069T01_9000002102cztM0_level2_bc.evt modeM0/AS1G08_069T01_9000002102cztM0_level2_quad_clean.evt
Size (bytes)3,552,563,5201,038,525,120
Size3.3 GB 990.4 MB
Events in quadrant A21,100,0396,783,765
Events in quadrant B19,283,9636,674,124
Events in quadrant C19,245,3016,448,640
Events in quadrant D42,495,7496,041,292

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016360
B016360
C016360
D016360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01790970
B01754300
C01697350
D02557440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01250
B01250
C01250
D01250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8034513051.624245%
B8034513491.679009%
C803455120.637252%
D8034555536.911444%

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 92791 80348 154 154 0.17% 0.19%
B 92791 80345 38 38 0.04% 0.05%
C 92791 80350 4 4 0.00% 0.00%
D 92791 80346 1178 1178 1.27% 1.47%

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 9 143 2812626 3017.91 4298 4210 930.6
A 12 189 1043440 1116.75 4298 4210 930.6
A 8 15 535944 571.4 4298 4210 930.6
B 0 229 1362438 1687.2 4266 4161 805.0
B 10 244 259683 317.4 4266 4161 805.0
B 0 189 234186 285.73 4266 4161 805.0
C 3 233 2890395 3150.63 4155 4110 916.1
C 14 234 48517 48.47 4155 4110 916.1
C 5 96 28496 26.62 4155 4110 916.1
D 8 195 9840120 10571.75 4033 3928 930.4
D 5 222 8348815 8968.92 4033 3928 930.4
D 1 52 3102178 3329.94 4033 3928 930.4

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