ASTROSAT CZTI

Data Quality Report

Orbit 03907

Creation date: 2024-06-27T14:35:05.631249
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/AS1G05_172T01_9000000502_03907cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03907cztM0_level2_quad_clean.evt
Size (bytes)471,651,84056,067,840
Size449.8 MB 53.5 MB
Events in quadrant A3,069,343318,084
Events in quadrant B3,176,182325,022
Events in quadrant C3,122,328319,655
Events in quadrant D4,497,634304,430

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131023
B0132532
C0134082
D0176862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6158320.519649%
B6158450.730757%
C6158440.714518%
D61585989.710945%

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 7498 6159 4 4 0.05% 0.06%
B 7498 6159 0 0 0.00% 0.00%
C 7498 6159 10 10 0.13% 0.16%
D 7498 6159 605 605 8.07% 9.82%

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 0 118 87968 578.55 743 729 150.8
A 8 15 47120 307.65 743 729 150.8
A 0 50 32473 210.52 743 729 150.8
B 15 204 151568 1058.75 758 741 142.5
B 14 167 85664 596.13 758 741 142.5
B 12 111 11429 75.03 758 741 142.5
C 9 247 238527 1432.51 724 728 166.0
C 10 65 50667 300.84 724 728 166.0
C 13 61 6186 32.88 724 728 166.0
D 2 32 1370054 8431.59 673 655 162.4
D 13 239 181496 1113.46 673 655 162.4
D 13 223 137455 842.3 673 655 162.4

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
Veto Counter