ASTROSAT CZTI

Data Quality Report

Orbit 13194

Creation date: 2024-06-27T16:37:48.134670
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/AS1A04_176T04_9000001964_13194cztM0_level2.evt modeM0/AS1A04_176T04_9000001964_13194cztM0_level2_quad_clean.evt
Size (bytes)1,463,431,680211,155,840
Size1.4 GB 201.4 MB
Events in quadrant A8,046,4711,335,141
Events in quadrant B10,732,9721,319,147
Events in quadrant C7,628,9631,343,088
Events in quadrant D16,755,1921,215,913

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353083
B0432973
C0349473
D0614463

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171302541.482779%
B1713011336.614127%
C171301991.161705%
D17130282016.462347%

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 18190 17132 1 1 0.01% 0.01%
B 18190 17131 612 612 3.36% 3.57%
C 18190 17131 9 9 0.05% 0.05%
D 18190 17131 1961 1961 10.78% 11.45%

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 242965 600.17 1982 1937 401.6
A 1 162 56303 135.37 1982 1937 401.6
A 12 189 40806 96.79 1982 1937 401.6
B 4 239 2139177 5755.94 1941 1888 371.3
B 0 189 550294 1476.91 1941 1888 371.3
B 3 64 159105 423.4 1941 1888 371.3
C 15 208 71782 156.25 1933 1943 447.0
C 13 61 14268 27.57 1933 1943 447.0
C 8 128 11071 20.42 1933 1943 447.0
D 13 122 9353221 21547.97 1806 1756 434.0
D 1 52 329963 756.27 1806 1756 434.0
D 2 234 80921 182.41 1806 1756 434.0

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