ASTROSAT CZTI

Data Quality Report

Orbit 48557

Creation date: 2024-09-20T01:13:11.971057
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_48557cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48557cztM0_level2_quad_clean.evt
Size (bytes)1,254,790,080265,392,000
Size1.2 GB 253.1 MB
Events in quadrant A17,603,4931,758,949
Events in quadrant B11,090,2891,736,120
Events in quadrant C7,419,6741,772,447
Events in quadrant D8,957,2181,539,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0684613077
B0474361275
C0376681177
D0430942453

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141
B0141
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037410
B03739
C037410
D037315

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177466213.499380%
B1785313427.516944%
C178671530.856327%
D177656243.512525%

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 19798 17886 37 37 0.19% 0.21%
B 19788 17976 884 884 4.47% 4.92%
C 19802 18017 0 0 0.00% 0.00%
D 19797 17887 373 373 1.88% 2.09%

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 9967664 25338.22 1881 1840 393.3
A 12 189 161947 407.07 1881 1840 393.3
A 7 3 112901 282.37 1881 1840 393.3
B 12 16 3445792 9525.5 1851 1790 361.6
B 5 255 140307 383.11 1851 1790 361.6
B 12 18 136389 372.28 1851 1790 361.6
C 12 250 31781 67.3 1891 1899 444.0
C 14 254 14115 27.51 1891 1899 444.0
C 13 61 12528 23.94 1891 1899 444.0
D 2 165 910841 1972.31 1852 1798 460.9
D 2 249 579025 1252.38 1852 1798 460.9
D 12 233 162496 348.66 1852 1798 460.9

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