ASTROSAT CZTI

Data Quality Report

Orbit 11115

Creation date: 2024-06-27T16:08:28.584622
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G08_071T02_9000001620_11115cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11115cztM0_level2_quad_clean.evt
Size (bytes)576,475,20078,200,640
Size549.8 MB 74.6 MB
Events in quadrant A5,592,797483,010
Events in quadrant B3,664,585510,602
Events in quadrant C2,939,156497,453
Events in quadrant D4,846,921448,469

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208333
B0147792
C0126042
D0185522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61314697.649649%
B6131961.565813%
C6131130.212037%
D61314597.486544%

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 7461 6132 345 345 4.62% 5.63%
B 7461 6132 61 61 0.82% 0.99%
C 7461 6132 8 8 0.11% 0.13%
D 7461 6132 404 404 5.41% 6.59%

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 5 2444754 16170.06 750 734 151.1
A 8 15 217524 1434.32 750 734 151.1
A 11 29 20666 131.87 750 734 151.1
B 4 239 456173 3118.27 774 759 146.0
B 0 187 31521 210.63 774 759 146.0
B 0 219 30737 205.26 774 759 146.0
C 14 234 32695 185.31 745 752 172.4
C 13 61 5461 27.32 745 752 172.4
C 5 32 3495 15.91 745 752 172.4
D 10 253 821605 4786.22 707 687 171.5
D 1 52 515467 3001.34 707 687 171.5
D 2 120 302653 1760.56 707 687 171.5

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