ASTROSAT CZTI

Data Quality Report

Orbit 26739

Creation date: 2024-06-27T19:32:18.637138
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/AS1T03_223T01_9000003850_26739cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26739cztM0_level2_quad_clean.evt
Size (bytes)593,136,00080,694,720
Size565.7 MB 77.0 MB
Events in quadrant A3,708,448488,471
Events in quadrant B4,107,969494,709
Events in quadrant C3,747,661479,660
Events in quadrant D5,889,781457,779

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157000
B0168900
C0157200
D0225220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75131301.730334%
B75132503.327566%
C75131992.648742%
D75124856.456337%

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 7833 7515 0 0 0.00% 0.00%
B 7833 7515 72 72 0.92% 0.96%
C 7833 7515 5 5 0.06% 0.07%
D 7832 7514 258 258 3.29% 3.43%

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 0 13 53243 273.22 945 923 191.5
A 13 254 12514 60.53 945 923 191.5
A 4 2 9352 44.02 945 923 191.5
B 0 189 374252 2114.23 929 905 176.6
B 10 246 48633 270.28 929 905 176.6
B 15 33 30566 167.97 929 905 176.6
C 14 238 144182 676.88 900 904 211.7
C 2 16 46921 217.4 900 904 211.7
C 3 233 27912 127.59 900 904 211.7
D 1 52 1378794 5745.07 890 872 239.8
D 7 80 571921 2380.92 890 872 239.8
D 2 250 294724 1225.18 890 872 239.8

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