ASTROSAT CZTI

Data Quality Report

Orbit 20181002_A05_101T04_9000002402_level2

Creation date: 2018-10-04T16:54:15.024323
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/AS1A05_101T04_9000002402cztM0_level2_bc.evt modeM0/AS1A05_101T04_9000002402cztM0_level2_quad_clean.evt
Size (bytes)1,013,351,040382,282,560
Size966.4 MB 364.6 MB
Events in quadrant A6,860,0642,401,944
Events in quadrant B6,819,6752,478,048
Events in quadrant C8,151,6892,428,289
Events in quadrant D6,995,3712,395,548

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05560
B05560
C05560
D05560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600150
B0589470
C0651140
D0589340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A272713431.257746%
B272712160.792050%
C272716202.273477%
D272702270.832417%

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 33493 27274 12 12 0.04% 0.04%
B 33493 27272 4 4 0.01% 0.01%
C 33493 27273 7 7 0.02% 0.03%
D 33493 27272 18 18 0.05% 0.07%

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 870991 2658.39 1549 1527 327.1
A 15 239 29053 84.16 1549 1527 327.1
A 3 1 19268 54.24 1549 1527 327.1
B 0 198 137237 466.96 1587 1555 290.6
B 0 189 123997 421.4 1587 1555 290.6
B 15 35 87797 296.81 1587 1555 290.6
C 3 233 2019847 5650.61 1540 1541 357.2
C 7 247 142993 396.02 1540 1541 357.2
C 0 207 80102 219.95 1540 1541 357.2
D 1 52 343479 946.74 1565 1521 361.2
D 10 70 287262 791.1 1565 1521 361.2
D 12 110 167581 459.75 1565 1521 361.2

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