ASTROSAT CZTI

Data Quality Report

Orbit 00155

Creation date: 2024-06-27T13:57:08.410970
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/AS1P01_120T01_9000000006_00155cztM0_level2.evt modeM0/AS1P01_120T01_9000000006_00155cztM0_level2_quad_clean.evt
Size (bytes)921,208,32054,927,360
Size878.5 MB 52.4 MB
Events in quadrant A7,090,588319,471
Events in quadrant B7,365,412322,914
Events in quadrant C6,540,357319,341
Events in quadrant D6,534,356312,678

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249892
B0257981
C0233661
D0233641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5547200.360555%
B5547921.658554%
C554710.018028%
D5547180.324500%

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 7139 5549 279 279 3.91% 5.03%
B 7139 5549 355 355 4.97% 6.40%
C 7139 5549 74 74 1.04% 1.33%
D 7139 5549 130 130 1.82% 2.34%

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 14 10 80311 201.69 1773 1757 389.5
A 14 201 61810 154.19 1773 1757 389.5
A 0 96 25475 60.9 1773 1757 389.5
B 10 199 448862 1083.89 1763 1776 412.5
B 5 216 65879 155.41 1763 1776 412.5
B 14 50 36824 84.97 1763 1776 412.5
C 0 218 31950 66.27 1630 1693 456.6
C 10 33 25302 51.71 1630 1693 456.6
C 10 21 20659 41.54 1630 1693 456.6
D 13 255 43635 85.85 1616 1674 488.7
D 10 101 40624 79.69 1616 1674 488.7
D 2 63 38920 76.21 1616 1674 488.7

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