ASTROSAT CZTI

Data Quality Report

Orbit 13118

Creation date: 2024-06-27T16:36:34.039233
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_017T01_9000001932_13118cztM0_level2.evt modeM0/AS1A04_017T01_9000001932_13118cztM0_level2_quad_clean.evt
Size (bytes)711,002,88081,979,200
Size678.1 MB 78.2 MB
Events in quadrant A6,628,511481,017
Events in quadrant B6,581,149436,093
Events in quadrant C3,649,694527,542
Events in quadrant D4,145,792495,910

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0247564
B0245273
C0161443
D0175683

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7781152219.560468%
B7781155119.933171%
C77812072.660326%
D77812693.457139%

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 7892 7783 759 759 9.62% 9.75%
B 7892 7784 819 819 10.38% 10.52%
C 7892 7784 0 0 0.00% 0.00%
D 7892 7784 40 40 0.51% 0.51%

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 15 223 1595132 9121.87 856 837 174.8
A 15 239 949033 5425.17 856 837 174.8
A 15 255 394954 2254.97 856 837 174.8
B 4 239 2504516 14966.11 863 837 167.3
B 0 85 592637 3537.57 863 837 167.3
B 3 64 46041 270.21 863 837 167.3
C 0 207 9658 39.89 934 937 218.6
C 13 61 6596 25.89 934 937 218.6
C 3 202 2351 6.47 934 937 218.6
D 1 52 410002 1829.79 923 893 223.6
D 13 122 131687 584.99 923 893 223.6
D 2 33 99541 441.22 923 893 223.6

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