ASTROSAT CZTI

Data Quality Report

Orbit 37125

Creation date: 2024-06-27T21:35:54.239026
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/AS1A11_079T01_9000005284_37125cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37125cztM0_level2_quad_clean.evt
Size (bytes)452,381,76055,537,920
Size431.4 MB 53.0 MB
Events in quadrant A3,036,745330,913
Events in quadrant B2,914,192328,658
Events in quadrant C3,309,328326,523
Events in quadrant D4,064,841308,662

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123903
B0122122
C0131902
D0157242

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5527751.356975%
B5527911.646463%
C55271132.044509%
D55274808.684639%

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 7200 5528 75 75 1.04% 1.36%
B 7200 5528 57 57 0.79% 1.03%
C 7200 5528 99 99 1.38% 1.79%
D 7200 5528 477 477 6.62% 8.63%

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 10 83 257680 1956.73 643 629 131.4
A 15 174 236793 1797.73 643 629 131.4
A 9 143 43552 326.74 643 629 131.4
B 5 172 265333 2155.44 635 619 122.8
B 5 184 73589 594.16 635 619 122.8
B 0 229 35187 281.47 635 619 122.8
C 14 254 555533 3833.42 619 623 144.8
C 15 214 239607 1650.94 619 623 144.8
C 0 10 95179 653.21 619 623 144.8
D 12 17 1123910 7616.72 602 585 147.5
D 13 249 239546 1620.28 602 585 147.5
D 2 250 118560 799.93 602 585 147.5

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