ASTROSAT CZTI

Data Quality Report

Orbit 45258

Creation date: 2024-06-27T23:11:34.518795
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_023T05_9000006062_45258cztM0_level2.fits modeM0/AS1A13_023T05_9000006062_45258cztM0_level2_quad_clean.evt
Size (bytes)452,157,120105,534,720
Size431.2 MB 100.6 MB
Events in quadrant A4,909,668710,560
Events in quadrant B2,982,926747,338
Events in quadrant C2,958,503712,651
Events in quadrant D5,403,373590,948

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193881
B0129521
C0129411
D0201491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62161452.332690%
B62161101.769627%
C6217891.431559%
D621769111.114686%

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 7291 6216 7 7 0.10% 0.11%
B 7291 6217 6 6 0.08% 0.10%
C 7292 6217 4 4 0.05% 0.06%
D 7292 6217 614 614 8.42% 9.88%

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 2036650 13408.18 733 716 151.8
A 13 248 42981 278.35 733 716 151.8
A 3 137 8555 51.63 733 716 151.8
B 12 111 18829 125.98 736 713 143.8
B 5 172 17950 119.87 736 713 143.8
B 14 111 17172 114.46 736 713 143.8
C 2 14 24564 137.14 739 744 173.7
C 12 249 20960 116.39 739 744 173.7
C 1 3 16849 92.72 739 744 173.7
D 5 222 1706990 9695.19 710 691 176.0
D 13 249 369191 2093.82 710 691 176.0
D 11 241 261178 1480.09 710 691 176.0

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