ASTROSAT CZTI

Data Quality Report

Orbit 19550

Creation date: 2024-06-27T18:03:58.528741
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/AS1A05_115T02_9000002906_19550cztM0_level2.evt modeM0/AS1A05_115T02_9000002906_19550cztM0_level2_quad_clean.evt
Size (bytes)447,261,12090,671,040
Size426.5 MB 86.5 MB
Events in quadrant A3,067,882583,843
Events in quadrant B3,126,469594,817
Events in quadrant C3,575,542556,003
Events in quadrant D3,327,659551,850

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134172
B0135602
C0150072
D0146583

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6587250.379535%
B6587330.500987%
C6587971.472598%
D6586490.744002%

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 7627 6588 0 0 0.00% 0.00%
B 7627 6588 7 7 0.09% 0.11%
C 7627 6588 28 28 0.37% 0.43%
D 7626 6587 31 31 0.41% 0.47%

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 9 143 51525 319.33 783 766 159.0
A 13 254 8399 48.02 783 766 159.0
A 0 226 6700 37.33 783 766 159.0
B 0 230 29127 189.25 780 760 149.9
B 3 64 26710 173.13 780 760 149.9
B 12 111 18012 115.1 780 760 149.9
C 7 247 284408 1620.88 748 756 175.0
C 3 233 138239 785.63 748 756 175.0
C 14 238 117177 665.27 748 756 175.0
D 7 238 206510 1116.5 756 734 184.3
D 12 218 135919 733.48 756 734 184.3
D 1 52 49157 262.73 756 734 184.3

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