ASTROSAT CZTI

Data Quality Report

Orbit 48577

Creation date: 2024-09-21T10:12:20.830220
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_037T01_9000006436_48577cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48577cztM0_level2_quad_clean.evt
Size (bytes)513,587,520103,674,240
Size489.8 MB 98.9 MB
Events in quadrant A6,678,419688,418
Events in quadrant B3,000,397742,110
Events in quadrant C2,738,068711,878
Events in quadrant D6,094,096546,790

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241402
B0135742
C0131132
D0228892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64502814.356589%
B6450881.364341%
C6450160.248062%
D645097115.054264%

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 7630 6451 135 135 1.77% 2.09%
B 7630 6451 16 16 0.21% 0.25%
C 7630 6451 1 1 0.01% 0.02%
D 7630 6451 842 842 11.04% 13.05%

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 3894338 27112.52 691 677 143.6
A 13 248 109409 757.12 691 677 143.6
A 13 254 11976 78.67 691 677 143.6
B 5 255 113185 816.84 704 682 137.7
B 12 16 81207 584.66 704 682 137.7
B 12 111 17199 119.92 704 682 137.7
C 14 254 10273 58.35 696 698 164.1
C 12 250 10059 57.05 696 698 164.1
C 14 67 7851 43.59 696 698 164.1
D 2 165 3088935 19611.67 631 612 157.5
D 13 171 430125 2727.52 631 612 157.5
D 12 128 79069 498.22 631 612 157.5

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