ASTROSAT CZTI

Data Quality Report

Orbit 04135

Creation date: 2024-06-27T14:37:50.892075
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/AS1G05_195T01_9000000530_04135cztM0_level2.evt modeM0/AS1G05_195T01_9000000530_04135cztM0_level2_quad_clean.evt
Size (bytes)1,146,994,560189,190,080
Size1.1 GB 180.4 MB
Events in quadrant A7,507,1721,184,045
Events in quadrant B8,775,5011,156,364
Events in quadrant C6,862,6621,180,927
Events in quadrant D10,521,8961,116,963

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0333633
B0361733
C0321473
D0426353

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158131961.239486%
B158134262.693986%
C158131500.948587%
D1581311887.512806%

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 18108 15816 12 12 0.07% 0.08%
B 18108 15816 218 218 1.20% 1.38%
C 18108 15816 3 3 0.02% 0.02%
D 18108 15816 1257 1257 6.94% 7.95%

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 8 15 314430 850.61 1787 1750 367.6
A 0 50 87277 232.67 1787 1750 367.6
A 0 118 72374 192.12 1787 1750 367.6
B 10 16 556243 1608.42 1796 1756 344.7
B 4 48 315957 911.41 1796 1756 344.7
B 15 204 254259 732.44 1796 1756 344.7
C 10 65 41092 97.06 1737 1742 405.4
C 13 61 14462 31.38 1737 1742 405.4
C 8 128 11524 24.13 1737 1742 405.4
D 13 53 3192449 7772.42 1704 1653 410.5
D 2 63 283880 687.47 1704 1653 410.5
D 10 172 104450 250.4 1704 1653 410.5

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