ASTROSAT CZTI

Data Quality Report

Orbit 39158

Creation date: 2024-06-27T22:01:13.344031
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_054T02_9000005444_39158cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39158cztM0_level2_quad_clean.evt
Size (bytes)389,856,96093,216,960
Size371.8 MB 88.9 MB
Events in quadrant A2,872,944669,217
Events in quadrant B3,224,086625,529
Events in quadrant C2,741,238620,621
Events in quadrant D5,196,148549,950

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116353
B0127972
C0110072
D0189662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5101150.294060%
B51013356.567340%
C5101621.215448%
D51015009.802000%

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 7253 5102 4 4 0.06% 0.08%
B 7253 5102 303 303 4.18% 5.94%
C 7253 5102 48 48 0.66% 0.94%
D 7253 5102 454 454 6.26% 8.90%

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 430376 3462.77 614 603 124.1
A 13 248 44261 351.76 614 603 124.1
A 15 223 18386 143.28 614 603 124.1
B 5 184 858928 7765.77 578 562 110.5
B 5 172 44640 398.78 578 562 110.5
B 0 190 26055 230.64 578 562 110.5
C 15 214 214001 1566.4 590 594 136.2
C 9 187 211606 1548.82 590 594 136.2
C 0 10 8245 56.16 590 594 136.2
D 12 235 2304600 16268.13 582 564 141.6
D 5 222 247815 1745.76 582 564 141.6
D 2 249 207935 1464.18 582 564 141.6

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