ASTROSAT CZTI

Data Quality Report

Orbit 20170812_A03_116T01_9000001460_level2

Creation date: 2017-09-24T15:05:12.457291
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/AS1A03_116T01_9000001460cztM0_level2.evt modeM0/AS1A03_116T01_9000001460cztM0_level2_quad_clean.evt
Size (bytes)7,524,037,4401,256,650,560
Size7.0 GB 1.2 GB
Events in quadrant A45,521,7298,135,521
Events in quadrant B50,244,3808,179,473
Events in quadrant C42,897,7798,061,570
Events in quadrant D82,861,8787,232,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019200
B019220
C019220
D019220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01650
B01650
C01650
D01650

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01989540
B02115230
C01936810
D03088040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9413212521.330047%
B9412113941.481072%
C941446610.702116%
D941211099311.679646%

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 110842 94176 238 238 0.21% 0.25%
B 110842 94176 295 295 0.27% 0.31%
C 110842 94181 10 10 0.01% 0.01%
D 110841 94167 9560 9560 8.62% 10.15%

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 15 174 705359 305.05 11353 11140 2275.8
A 15 223 452572 193.97 11353 11140 2275.8
A 15 239 214528 89.37 11353 11140 2275.8
B 4 81 2875279 1338.09 11383 11135 2140.5
B 4 239 819437 377.63 11383 11135 2140.5
B 0 214 774973 356.85 11383 11135 2140.5
C 14 67 122739 44.37 10950 11013 2518.0
C 13 61 82804 28.51 10950 11013 2518.0
C 14 234 80139 27.45 10950 11013 2518.0
D 1 52 18341106 6727.11 10361 10131 2724.9
D 4 95 11756748 4310.78 10361 10131 2724.9
D 8 195 6066743 2222.66 10361 10131 2724.9

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