ASTROSAT CZTI

Data Quality Report

Orbit 20180714_A04_130T03_9000002224_level2

Creation date: 2018-07-16T13:08:37.456089
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_130T03_9000002224cztM0_level2_bc.evt modeM0/AS1A04_130T03_9000002224cztM0_level2_quad_clean.evt
Size (bytes)1,333,154,880406,235,520
Size1.2 GB 387.4 MB
Events in quadrant A7,192,7902,524,599
Events in quadrant B13,572,6552,516,880
Events in quadrant C9,652,5602,532,721
Events in quadrant D7,674,0172,431,594

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06800
B06800
C06800
D06800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700790
B0946970
C0772250
D0713740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A334356581.967998%
B3343528158.419321%
C334357222.159414%
D334355761.722746%

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 38977 33437 12 12 0.03% 0.04%
B 38977 33434 382 382 0.98% 1.14%
C 38977 33437 22 22 0.06% 0.07%
D 38977 33436 9 9 0.02% 0.03%

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 12 189 113243 292.87 1779 1743 380.7
A 15 69 74680 191.58 1779 1743 380.7
A 13 248 53562 136.11 1779 1743 380.7
B 10 245 4555592 14024.77 1744 1700 324.7
B 3 64 1700684 5232.42 1744 1700 324.7
B 0 229 306195 937.76 1744 1700 324.7
C 3 233 1669495 4336.02 1764 1741 384.6
C 4 254 1046368 2715.94 1764 1741 384.6
C 7 247 16337 37.95 1764 1741 384.6
D 2 14 264761 650.52 1777 1715 404.4
D 2 152 139364 340.41 1777 1715 404.4
D 2 234 130512 318.52 1777 1715 404.4

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