ASTROSAT CZTI

Data Quality Report

Orbit 41432

Creation date: 2024-06-27T22:28:56.220636
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/AS1A12_035T01_9000005666_41432cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41432cztM0_level2_quad_clean.evt
Size (bytes)340,269,12095,198,400
Size324.5 MB 90.8 MB
Events in quadrant A2,999,953648,544
Events in quadrant B2,711,401667,832
Events in quadrant C3,382,493608,997
Events in quadrant D3,083,366581,643

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121353
B0115742
C0131322
D0127482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5373130.241950%
B5373320.595570%
C53732905.397357%
D53731242.307835%

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 9587 5375 6 6 0.06% 0.11%
B 9587 5375 17 17 0.18% 0.32%
C 9587 5375 279 279 2.91% 5.19%
D 9587 5375 92 92 0.96% 1.71%

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 510527 3985.44 624 611 127.9
A 13 248 38126 293.21 624 611 127.9
A 2 79 26487 202.24 624 611 127.9
B 5 255 155014 1279.98 622 606 120.6
B 0 190 44649 365.1 622 606 120.6
B 0 186 37667 307.22 622 606 120.6
C 0 10 721701 5196.05 598 602 138.8
C 15 214 215495 1548.46 598 602 138.8
C 15 111 115546 828.26 598 602 138.8
D 1 47 248365 1639.14 617 601 151.2
D 13 171 240043 1584.08 617 601 151.2
D 10 199 105635 694.88 617 601 151.2

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