ASTROSAT CZTI

Data Quality Report

Orbit 13054

Creation date: 2024-06-27T16:35:49.763884
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_045T01_9000001920_13054cztM0_level2.evt modeM0/AS1G08_045T01_9000001920_13054cztM0_level2_quad_clean.evt
Size (bytes)668,905,920100,800,000
Size637.9 MB 96.1 MB
Events in quadrant A3,275,829695,331
Events in quadrant B7,845,372563,206
Events in quadrant C3,038,434716,010
Events in quadrant D5,674,634640,716

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137182
B0275131
C0129841
D0211881

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6260420.670927%
B6260244038.977636%
C6260160.255591%
D626073511.741214%

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 7526 6262 13 13 0.17% 0.21%
B 7526 6261 1659 1659 22.04% 26.50%
C 7526 6262 1 1 0.01% 0.02%
D 7526 6262 557 557 7.40% 8.89%

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 72427 461.01 776 761 155.5
A 9 143 57427 364.52 776 761 155.5
A 15 223 46003 291.03 776 761 155.5
B 4 239 3504144 32019.73 585 569 109.4
B 0 85 1852014 16920.65 585 569 109.4
B 3 64 140810 1281.68 585 569 109.4
C 14 234 6570 32.23 776 784 179.5
C 13 61 5522 26.39 776 784 179.5
C 12 4 3577 15.56 776 784 179.5
D 1 52 1947167 11223.39 724 704 173.4
D 14 34 808873 4659.94 724 704 173.4
D 13 112 104291 597.28 724 704 173.4

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