ASTROSAT CZTI

Data Quality Report

Orbit 46225

Creation date: 2024-06-27T23:20:31.291876
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_065T03_9000006186_46225cztM0_level2.fits modeM0/AS1A13_065T03_9000006186_46225cztM0_level2_quad_clean.evt
Size (bytes)493,931,520109,134,720
Size471.0 MB 104.1 MB
Events in quadrant A6,230,615728,529
Events in quadrant B4,388,396757,542
Events in quadrant C3,260,255709,484
Events in quadrant D3,884,980641,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227411
B0175471
C0144701
D0161241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66991502.239140%
B66991041.552471%
C67001031.537313%
D67001912.850746%

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 7694 6699 13 13 0.17% 0.19%
B 7694 6699 34 34 0.44% 0.51%
C 7695 6700 51 51 0.66% 0.76%
D 7695 6700 153 153 1.99% 2.28%

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 3144159 19649.28 763 747 160.0
A 0 247 46944 288.77 763 747 160.0
A 9 191 46628 286.8 763 747 160.0
B 3 112 1173892 7830.76 756 734 149.8
B 5 172 128237 851.07 756 734 149.8
B 5 255 39938 261.68 756 734 149.8
C 12 2 274480 1560.29 737 742 175.4
C 1 3 102340 579.1 737 742 175.4
C 5 49 6294 31.65 737 742 175.4
D 5 235 667427 3581.55 738 715 186.2
D 3 13 97400 519.39 738 715 186.2
D 2 249 85976 458.02 738 715 186.2

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