ASTROSAT CZTI

Data Quality Report

Orbit 18473

Creation date: 2024-06-27T17:50:11.965308
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/AS1A05_072T02_9000002736_18473cztM0_level2.evt modeM0/AS1A05_072T02_9000002736_18473cztM0_level2_quad_clean.evt
Size (bytes)471,015,36086,169,600
Size449.2 MB 82.2 MB
Events in quadrant A3,671,321533,021
Events in quadrant B3,605,627551,344
Events in quadrant C3,226,827532,563
Events in quadrant D3,301,621521,423

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153152
B0150002
C0139402
D0145822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67512623.880907%
B67512433.599467%
C67511512.236706%
D67511251.851578%

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 7041 6752 91 91 1.29% 1.35%
B 7041 6752 76 76 1.08% 1.13%
C 7041 6753 4 4 0.06% 0.06%
D 7041 6751 2 2 0.03% 0.03%

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 15 174 458401 2772.26 808 788 165.1
A 4 2 97702 587.11 808 788 165.1
A 0 226 7128 38.41 808 788 165.1
B 15 222 178934 1132.45 809 787 157.3
B 10 245 142626 901.64 809 787 157.3
B 0 230 69653 437.77 809 787 157.3
C 14 238 120636 655.23 780 785 182.9
C 9 54 26865 142.58 780 785 182.9
C 3 233 24127 127.61 780 785 182.9
D 7 38 95800 488.39 796 773 194.6
D 13 168 83459 424.97 796 773 194.6
D 12 110 41755 210.63 796 773 194.6

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