ASTROSAT CZTI

Data Quality Report

Orbit 47623

Creation date: 2024-07-19T00:17:36.461374
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_071T01_9000006340_47623cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47623cztM0_level2_quad_clean.evt
Size (bytes)507,087,360104,460,480
Size483.6 MB 99.6 MB
Events in quadrant A7,411,878677,009
Events in quadrant B4,933,586678,780
Events in quadrant C2,823,844697,167
Events in quadrant D3,085,632646,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268631
B0192191
C0134921
D0141081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66445167.766406%
B66455978.984199%
C6645110.165538%
D6645280.421369%

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 7289 6645 214 214 2.94% 3.22%
B 7290 6646 335 335 4.60% 5.04%
C 7290 6646 1 1 0.01% 0.02%
D 7290 6646 12 12 0.16% 0.18%

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 3691104 24547.85 722 708 150.3
A 13 248 612899 4072.19 722 708 150.3
A 9 191 238486 1581.66 722 708 150.3
B 5 172 1688023 12001.42 713 691 140.6
B 0 200 148804 1053.48 713 691 140.6
B 0 190 141534 1001.77 713 691 140.6
C 14 254 10207 56.2 718 721 168.8
C 14 220 8861 48.22 718 721 168.8
C 3 233 6731 35.61 718 721 168.8
D 2 249 98264 542.68 719 697 179.8
D 2 120 81675 450.41 719 697 179.8
D 8 176 49328 270.49 719 697 179.8

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