ASTROSAT CZTI

Data Quality Report

Orbit 04958

Creation date: 2024-06-27T14:49:22.244384
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_140T01_9000000628_04958cztM0_level2.evt modeM0/AS1G05_140T01_9000000628_04958cztM0_level2_quad_clean.evt
Size (bytes)444,170,88062,616,960
Size423.6 MB 59.7 MB
Events in quadrant A3,067,115360,340
Events in quadrant B3,295,544359,422
Events in quadrant C2,901,340366,409
Events in quadrant D3,731,638341,995

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139422
B0142831
C0135751
D0159861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6707570.849858%
B6707721.073505%
C6707370.551662%
D67072002.981959%

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 7467 6707 3 3 0.04% 0.04%
B 7467 6707 13 13 0.17% 0.19%
C 7467 6707 0 0 0.00% 0.00%
D 7467 6707 144 144 1.93% 2.15%

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 50 92439 594.59 754 737 154.2
A 13 251 27131 171.14 754 737 154.2
A 0 31 24074 151.32 754 737 154.2
B 15 204 109023 735.68 765 746 147.2
B 15 54 85592 576.48 765 746 147.2
B 0 219 47823 319.86 765 746 147.2
C 8 128 7181 37.29 739 741 172.7
C 13 61 6069 30.85 739 741 172.7
C 12 4 4457 21.52 739 741 172.7
D 2 33 356394 1986.74 726 701 179.0
D 2 136 206777 1151.05 726 701 179.0
D 13 235 157308 874.73 726 701 179.0

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