ASTROSAT CZTI

Data Quality Report

Orbit 41522

Creation date: 2024-06-27T22:30:03.525762
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_035T02_9000005676_41522cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41522cztM0_level2_quad_clean.evt
Size (bytes)322,747,20093,110,400
Size307.8 MB 88.8 MB
Events in quadrant A2,972,384625,095
Events in quadrant B2,734,963635,624
Events in quadrant C3,120,753592,838
Events in quadrant D2,677,260570,022

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122053
B0120342
C0128062
D0121082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5664120.211864%
B5664520.918079%
C56641933.407486%
D5664210.370763%

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 9040 5666 3 3 0.03% 0.05%
B 9040 5666 42 42 0.46% 0.74%
C 9040 5666 183 183 2.02% 3.23%
D 9040 5666 16 16 0.18% 0.28%

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 538204 4216.16 623 611 127.5
A 13 248 18478 140.12 623 611 127.5
A 13 254 10044 73.98 623 611 127.5
B 5 255 197845 1661.26 614 596 118.7
B 0 190 60318 502.99 614 596 118.7
B 0 245 22246 182.34 614 596 118.7
C 0 10 497490 3530.58 599 601 140.7
C 15 214 230665 1634.69 599 601 140.7
C 14 254 26483 183.9 599 601 140.7
D 1 47 153573 1032.71 611 594 148.1
D 12 128 70527 472.1 611 594 148.1
D 12 6 59157 395.34 611 594 148.1

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