ASTROSAT CZTI

Data Quality Report

Orbit 29487

Creation date: 2024-06-27T20:04:36.754083
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/AS1A10_064T03_9000004246_29487cztM0_level2.evt modeM0/AS1A10_064T03_9000004246_29487cztM0_level2_quad_clean.evt
Size (bytes)746,948,16095,325,120
Size712.3 MB 90.9 MB
Events in quadrant A2,878,539675,659
Events in quadrant B2,950,419688,654
Events in quadrant C4,644,395653,842
Events in quadrant D11,758,922464,795

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119851
B0122111
C0181001
D0388941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5766460.797780%
B5767671.161783%
C57672895.011271%
D5767342859.441651%

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 6966 5768 0 0 0.00% 0.00%
B 6967 5769 1 1 0.01% 0.02%
C 6967 5769 3 3 0.04% 0.05%
D 6967 5768 2927 2927 42.01% 50.75%

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 96 17620 114.89 738 726 147.0
A 13 254 11619 74.08 738 726 147.0
A 15 174 7725 47.6 738 726 147.0
B 0 190 24646 177.11 731 713 135.1
B 15 32 21147 151.22 731 713 135.1
B 12 111 15570 109.95 731 713 135.1
C 3 233 1619692 9791.54 713 719 165.3
C 14 238 137435 826.86 713 719 165.3
C 7 247 64177 383.79 713 719 165.3
D 8 195 5498644 41609.49 560 545 132.1
D 1 52 3793679 28706.36 560 545 132.1
D 12 33 138394 1043.24 560 545 132.1

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