ASTROSAT CZTI

Data Quality Report

Orbit 41958

Creation date: 2024-06-27T22:35:08.434599
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_025T16_9000005724_41958cztM0_level2.fits modeM0/AS1A12_025T16_9000005724_41958cztM0_level2_quad_clean.evt
Size (bytes)331,724,16094,694,400
Size316.4 MB 90.3 MB
Events in quadrant A3,183,649635,144
Events in quadrant B2,859,176641,555
Events in quadrant C2,722,035616,260
Events in quadrant D3,062,877569,037

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129447
B01235110
C0117786
D0131289

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5797120.207004%
B5793540.932160%
C579670.120773%
D5798651.121076%

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 7114 5800 4 4 0.06% 0.07%
B 7114 5799 31 31 0.44% 0.53%
C 7114 5799 10 10 0.14% 0.17%
D 7114 5801 49 49 0.69% 0.84%

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 605352 4657.69 635 622 129.8
A 2 79 54147 412.25 635 622 129.8
A 13 248 44739 339.79 635 622 129.8
B 5 255 113429 912.84 628 611 123.6
B 0 156 82507 662.64 628 611 123.6
B 0 190 73220 587.5 628 611 123.6
C 15 214 253295 1743.82 617 621 144.9
C 15 111 55589 379.36 617 621 144.9
C 8 79 6145 38.12 617 621 144.9
D 5 222 125562 831.82 616 601 150.2
D 13 249 112003 741.56 616 601 150.2
D 10 199 94005 621.75 616 601 150.2

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