ASTROSAT CZTI

Data Quality Report

Orbit 20180307_A04_104T04_9000001966_level2

Creation date: 2018-07-03T13:45:44.610605
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/AS1A04_104T04_9000001966cztM0_level2_bc.evt modeM0/AS1A04_104T04_9000001966cztM0_level2_quad_clean.evt
Size (bytes)3,053,329,920882,123,840
Size2.8 GB 841.3 MB
Events in quadrant A14,587,4275,577,264
Events in quadrant B23,179,5305,604,528
Events in quadrant C14,035,8235,715,213
Events in quadrant D35,901,4485,023,888

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01462100
B01794690
C01444100
D02467810

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014280
B014280
C014280
D014280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6991710441.493199%
B6991950057.158283%
C699157081.012658%
D699161103215.778935%

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 80770 69922 23 23 0.03% 0.03%
B 80770 69907 825 825 1.02% 1.18%
C 80770 69925 4 4 0.00% 0.01%
D 80770 69910 79 79 0.10% 0.11%

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 8 15 289046 375.54 3534 3464 760.5
A 12 96 265238 344.23 3534 3464 760.5
A 1 162 148259 190.41 3534 3464 760.5
B 4 239 6510104 9877.64 3512 3414 658.7
B 0 85 1177310 1782.06 3512 3414 658.7
B 3 64 646554 976.33 3512 3414 658.7
C 15 208 181265 231.67 3528 3477 767.4
C 14 234 26313 29.76 3528 3477 767.4
C 8 222 23869 26.57 3528 3477 767.4
D 13 122 17802190 23591.62 3256 3133 754.5
D 1 52 2608744 3453.59 3256 3133 754.5
D 8 195 1824494 2414.11 3256 3133 754.5

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