ASTROSAT CZTI

Data Quality Report

Orbit 27462

Creation date: 2024-06-27T19:40:19.735115
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/AS1T03_249T01_9000003934_27462cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27462cztM0_level2_quad_clean.evt
Size (bytes)436,898,88080,709,120
Size416.7 MB 77.0 MB
Events in quadrant A3,163,690505,932
Events in quadrant B3,240,095512,223
Events in quadrant C3,199,483485,394
Events in quadrant D3,181,189482,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134300
B0136200
C0135170
D0138470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6570881.339422%
B6570991.506849%
C65701181.796043%
D6570801.217656%

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 7120 6570 0 0 0.00% 0.00%
B 7120 6570 4 4 0.06% 0.06%
C 7120 6570 1 1 0.01% 0.02%
D 7120 6570 13 13 0.18% 0.20%

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 13 254 10132 56.66 819 802 164.7
A 3 137 8074 44.16 819 802 164.7
A 0 226 6891 36.98 819 802 164.7
B 3 64 29621 182.93 809 789 157.6
B 12 111 19090 116.11 809 789 157.6
B 11 111 17321 104.89 809 789 157.6
C 14 238 122671 659.15 780 785 184.9
C 10 22 30181 158.97 780 785 184.9
C 13 61 5321 24.53 780 785 184.9
D 2 250 104984 547.33 793 773 190.4
D 2 120 59737 309.68 793 773 190.4
D 2 234 28318 144.67 793 773 190.4

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