ASTROSAT CZTI

Data Quality Report

Orbit 45999

Creation date: 2024-06-27T23:18:36.761301
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_017T01_9000006148_45999cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45999cztM0_level2_quad_clean.evt
Size (bytes)584,507,520104,808,960
Size557.4 MB 100.0 MB
Events in quadrant A5,535,598707,939
Events in quadrant B7,914,053657,004
Events in quadrant C2,885,609720,124
Events in quadrant D4,774,803615,265

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209331
B0283671
C0138431
D0191721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67931902.796997%
B6794111816.455696%
C6794500.735943%
D67945918.698852%

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 7253 6793 1 1 0.01% 0.01%
B 7254 6794 723 723 9.97% 10.64%
C 7254 6797 0 0 0.00% 0.00%
D 7254 6794 404 404 5.57% 5.95%

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 2630315 16876.07 748 733 155.8
A 2 79 13436 81.52 748 733 155.8
A 3 137 8808 51.82 748 733 155.8
B 3 112 5016927 34841.47 722 699 144.0
B 12 111 18621 124.48 722 699 144.0
B 11 111 17074 113.74 722 699 144.0
C 12 249 5212 25.81 738 739 173.3
C 13 61 4896 23.99 738 739 173.3
C 10 20 2762 11.67 738 739 173.3
D 1 52 1571936 8817.79 708 684 178.2
D 13 249 298396 1670.74 708 684 178.2
D 2 249 104110 580.42 708 684 178.2

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