ASTROSAT CZTI

Data Quality Report

Orbit 48459

Creation date: 2024-09-13T08:38:09.381064
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/AS1A13_029T01_9000006426_48459cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48459cztM0_level2_quad_clean.evt
Size (bytes)488,623,680114,456,960
Size466.0 MB 109.2 MB
Events in quadrant A7,272,817756,524
Events in quadrant B3,615,962789,993
Events in quadrant C3,075,434759,025
Events in quadrant D3,578,360671,502

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265452
B0157562
C0144042
D0159912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70172533.605529%
B70171642.337181%
C7017340.484538%
D70172163.078239%

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 8032 7018 87 87 1.08% 1.24%
B 8032 7018 120 120 1.49% 1.71%
C 8032 7018 2 2 0.02% 0.03%
D 8032 7018 164 164 2.04% 2.34%

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 4294318 26830.44 767 751 160.0
A 13 254 13714 81.01 767 751 160.0
A 3 137 8828 50.47 767 751 160.0
B 5 255 408036 2645.1 771 748 154.0
B 12 16 63333 406.45 771 748 154.0
B 8 234 62636 401.92 771 748 154.0
C 12 250 24255 127.67 770 776 183.9
C 15 208 20252 105.9 770 776 183.9
C 12 249 20195 105.59 770 776 183.9
D 7 96 491150 2561.37 753 729 191.5
D 2 249 59519 307.05 753 729 191.5
D 5 222 57128 294.56 753 729 191.5

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