ASTROSAT CZTI

Data Quality Report

Orbit 20170320_G06_028T01_9000001094_level2

Creation date: 2017-09-23T11:07:16.102686
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_028T01_9000001094cztM0_level2.evt modeM0/AS1G06_028T01_9000001094cztM0_level2_quad_clean.evt
Size (bytes)1,906,551,360375,923,520
Size1.8 GB 358.5 MB
Events in quadrant A14,341,5352,417,483
Events in quadrant B12,334,1972,508,166
Events in quadrant C12,673,3672,549,972
Events in quadrant D16,858,4172,345,997

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04620
B04620
C04620
D04620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0579680
B0517670
C0525300
D0655180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A227465102.242152%
B227465402.374044%
C227463951.736569%
D2274616867.412292%

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 27876 22750 93 93 0.33% 0.41%
B 27876 22750 150 150 0.54% 0.66%
C 27876 22750 77 77 0.28% 0.34%
D 27876 22750 1205 1205 4.32% 5.30%

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 0 128 2513732 4460.23 2803 2752 563.0
A 15 239 654842 1158.3 2803 2752 563.0
A 4 2 309751 545.32 2803 2752 563.0
B 4 239 706537 1334.15 2845 2786 527.5
B 5 250 212214 397.03 2845 2786 527.5
B 11 51 144469 268.6 2845 2786 527.5
C 1 16 1702440 2650.13 2805 2838 641.3
C 8 143 22724 31.01 2805 2838 641.3
C 13 61 21223 28.67 2805 2838 641.3
D 1 83 4417344 6127.27 2677 2632 720.5
D 1 52 1679850 2327.85 2677 2632 720.5
D 12 233 224592 308.06 2677 2632 720.5

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