ASTROSAT CZTI

Data Quality Report

Orbit 12608

Creation date: 2024-06-27T16:29:56.176665
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_071T01_9000001874_12608cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12608cztM0_level2_quad_clean.evt
Size (bytes)489,643,200101,664,000
Size467.0 MB 97.0 MB
Events in quadrant A3,236,909652,093
Events in quadrant B4,161,467669,472
Events in quadrant C3,256,054668,785
Events in quadrant D3,724,933626,888

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140803
B0167132
C0141022
D0157782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6622560.845666%
B66223625.466626%
C6622520.785261%
D6622901.359106%

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 9268 6625 0 0 0.00% 0.00%
B 9268 6624 241 241 2.60% 3.64%
C 9268 6625 12 12 0.13% 0.18%
D 9268 6625 36 36 0.39% 0.54%

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 12 189 37484 219.67 820 800 167.0
A 3 1 29100 169.47 820 800 167.0
A 9 143 16807 95.85 820 800 167.0
B 4 239 842825 5570.32 804 785 151.2
B 11 51 52883 344.64 804 785 151.2
B 0 214 51366 334.61 804 785 151.2
C 15 208 76691 406.3 814 819 186.7
C 13 61 5887 27.14 814 819 186.7
C 14 234 5508 25.11 814 819 186.7
D 1 52 537164 2822.55 795 774 190.0
D 10 157 41932 216.58 795 774 190.0
D 2 14 32757 168.3 795 774 190.0

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