ASTROSAT CZTI

Data Quality Report

Orbit 47886

Creation date: 2024-08-05T18:28:02.721543
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_053T01_9000006370_47886cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47886cztM0_level2_quad_clean.evt
Size (bytes)644,999,040117,650,880
Size615.1 MB 112.2 MB
Events in quadrant A7,538,572802,409
Events in quadrant B3,583,070819,718
Events in quadrant C3,455,763800,574
Events in quadrant D8,699,791601,935

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282520
B0163200
C0162210
D0311780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7730851.099612%
B7730370.478655%
C7730500.646831%
D7730153319.831824%

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 7730 7730 14 14 0.18% 0.18%
B 7730 7730 19 19 0.25% 0.25%
C 7730 7730 47 47 0.61% 0.61%
D 7730 7730 1427 1427 18.46% 18.46%

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 4159623 23907.22 834 814 174.0
A 13 248 64859 368.17 834 814 174.0
A 7 3 63641 361.17 834 814 174.0
B 0 183 175694 1073.83 829 801 162.9
B 0 245 37501 225.34 829 801 162.9
B 4 171 31159 186.4 829 801 162.9
C 12 2 216109 1113.41 825 827 193.4
C 14 254 21700 107.95 825 827 193.4
C 13 61 5456 23.94 825 827 193.4
D 2 37 4351975 22820.93 762 737 190.7
D 2 249 889009 4658.72 762 737 190.7
D 12 2 238786 1248.5 762 737 190.7

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