ASTROSAT CZTI

Data Quality Report

Orbit 36656

Creation date: 2024-06-27T21:29:51.272356
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/AS1A11_049T05_9000005232_36656cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36656cztM0_level2_quad_clean.evt
Size (bytes)490,631,04080,997,120
Size467.9 MB 77.2 MB
Events in quadrant A2,952,889530,579
Events in quadrant B3,139,158529,971
Events in quadrant C3,723,673503,774
Events in quadrant D4,649,930483,264

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123683
B0129592
C0146502
D0177562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5793240.414293%
B5793771.329190%
C57932624.522700%
D57933295.679268%

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 7226 5794 15 15 0.21% 0.26%
B 7226 5794 41 41 0.57% 0.71%
C 7226 5794 201 201 2.78% 3.47%
D 7226 5794 250 250 3.46% 4.31%

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 225092 1643.63 677 664 136.5
A 9 143 80912 587.71 677 664 136.5
A 13 6 14478 101.17 677 664 136.5
B 4 171 132304 1020.06 667 649 129.1
B 5 255 131977 1017.53 667 649 129.1
B 0 190 56327 431.39 667 649 129.1
C 0 10 322040 2161.69 639 644 148.7
C 15 159 262696 1762.54 639 644 148.7
C 15 214 261280 1753.02 639 644 148.7
D 2 249 560983 3572.29 643 626 156.9
D 2 250 431801 2748.75 643 626 156.9
D 12 235 415020 2641.77 643 626 156.9

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