ASTROSAT CZTI

Data Quality Report

Orbit 36574

Creation date: 2024-06-27T21:28:37.447596
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_097T17_9000005222_36574cztM0_level2.evt modeM0/AS1A11_097T17_9000005222_36574cztM0_level2_quad_clean.evt
Size (bytes)488,666,88066,818,880
Size466.0 MB 63.7 MB
Events in quadrant A3,008,859410,028
Events in quadrant B2,994,297412,217
Events in quadrant C3,810,250395,462
Events in quadrant D4,569,569376,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128293
B0128582
C0150832
D0179022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6130100.163132%
B6130160.261011%
C61301843.001631%
D61303736.084829%

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 9204 6132 0 0 0.00% 0.00%
B 9204 6132 5 5 0.05% 0.08%
C 9204 6132 127 127 1.38% 2.07%
D 9204 6132 260 260 2.82% 4.24%

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 211959 1461.97 713 700 144.5
A 15 223 17914 119.13 713 700 144.5
A 13 210 10786 69.8 713 700 144.5
B 5 255 66744 482.44 709 689 136.9
B 0 219 34472 246.74 709 689 136.9
B 5 172 21462 151.72 709 689 136.9
C 0 10 673663 4166.29 689 693 161.5
C 15 214 260877 1610.77 689 693 161.5
C 14 254 144570 890.73 689 693 161.5
D 13 249 604621 3656.29 677 659 165.2
D 12 235 461087 2787.36 677 659 165.2
D 12 16 196277 1184.24 677 659 165.2

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