ASTROSAT CZTI

Data Quality Report

Orbit 48615

Creation date: 2024-09-24T00:37:15.212543
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_037T01_9000006436_48615cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48615cztM0_level2_quad_clean.evt
Size (bytes)1,889,593,920267,603,840
Size1.8 GB 255.2 MB
Events in quadrant A20,300,4251,876,981
Events in quadrant B25,178,3831,349,178
Events in quadrant C8,285,3221,943,394
Events in quadrant D14,690,7911,600,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0747023
B0883813
C0397683
D0569473

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1933311525.958723%
B19333687435.555785%
C193342521.303403%
D1933418049.330713%

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 20573 19336 296 296 1.44% 1.53%
B 20573 19335 5096 5096 24.77% 26.36%
C 20574 19337 7 7 0.03% 0.04%
D 20574 19337 1209 1209 5.88% 6.25%

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 11111653 25733.73 2072 2020 431.7
A 13 248 1022788 2364.45 2072 2020 431.7
A 12 189 80282 181.28 2072 2020 431.7
B 12 16 16825111 49408.91 1730 1672 340.5
B 12 18 1217708 3571.39 1730 1672 340.5
B 0 198 67049 192.01 1730 1672 340.5
C 12 250 89989 179.24 2082 2087 490.4
C 12 249 37022 71.23 2082 2087 490.4
C 14 254 28482 53.82 2082 2087 490.4
D 2 165 6061073 11888.39 2014 1946 509.7
D 10 199 285644 556.63 2014 1946 509.7
D 15 127 192942 374.75 2014 1946 509.7

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