ASTROSAT CZTI

Data Quality Report

Orbit 44875

Creation date: 2024-06-27T23:08:28.803478
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_042T03_9000006030_44875cztM0_level2.fits modeM0/AS1A13_042T03_9000006030_44875cztM0_level2_quad_clean.evt
Size (bytes)444,715,200107,271,360
Size424.1 MB 102.3 MB
Events in quadrant A5,205,077712,408
Events in quadrant B3,669,050724,015
Events in quadrant C3,051,050707,156
Events in quadrant D4,019,573640,087

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208932
B0153142
C0137772
D0164682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66561552.328726%
B66562203.305288%
C6656490.736178%
D66571802.703921%

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 7586 6657 19 19 0.25% 0.29%
B 7586 6657 114 114 1.50% 1.71%
C 7586 6657 6 6 0.08% 0.09%
D 7587 6658 94 94 1.24% 1.41%

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 2154476 13625.83 757 739 158.1
A 7 3 53338 332.77 757 739 158.1
A 13 248 51564 321.55 757 739 158.1
B 3 112 239439 1597.41 745 720 149.4
B 5 255 157614 1049.87 745 720 149.4
B 0 190 106846 710.15 745 720 149.4
C 2 14 46389 258.75 744 747 176.4
C 1 3 38430 213.63 744 747 176.4
C 12 250 28287 156.13 744 747 176.4
D 2 249 308818 1639.19 742 720 188.0
D 1 52 282055 1496.8 742 720 188.0
D 13 249 253180 1343.17 742 720 188.0

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