ASTROSAT CZTI

Data Quality Report

Orbit 12139

Creation date: 2024-06-27T16:22:56.399370
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/AS1G08_065T01_9000001796_12139cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12139cztM0_level2_quad_clean.evt
Size (bytes)472,844,16075,438,720
Size450.9 MB 71.9 MB
Events in quadrant A3,804,865457,039
Events in quadrant B4,306,876471,274
Events in quadrant C2,694,586478,640
Events in quadrant D3,111,173462,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151652
B0166971
C0120681
D0132151

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59224207.092199%
B59223215.420466%
C5922270.455927%
D5922661.114488%

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 6973 5924 335 335 4.80% 5.65%
B 6973 5924 149 149 2.14% 2.52%
C 6973 5924 9 9 0.13% 0.15%
D 6973 5924 40 40 0.57% 0.68%

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 14 63 923799 6698.89 687 674 137.8
A 1 162 58404 418.93 687 674 137.8
A 5 16 56210 403.01 687 674 137.8
B 4 239 823556 6241.28 693 675 131.8
B 15 201 306871 2322.4 693 675 131.8
B 11 51 124834 941.71 693 675 131.8
C 3 233 28863 179.96 678 682 156.6
C 15 208 14872 90.61 678 682 156.6
C 13 61 4888 26.86 678 682 156.6
D 1 52 341622 2102.0 679 660 162.2
D 8 195 75115 459.01 679 660 162.2
D 10 50 43276 262.72 679 660 162.2

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