ASTROSAT CZTI

Data Quality Report

Orbit 18533

Creation date: 2024-06-27T17:51:06.385386
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_187T03_9000002748_18533cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18533cztM0_level2_quad_clean.evt
Size (bytes)377,193,60052,914,240
Size359.7 MB 50.5 MB
Events in quadrant A2,367,197325,763
Events in quadrant B2,390,000329,626
Events in quadrant C2,321,424317,753
Events in quadrant D4,013,888287,760

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102911
B0103011
C0101621
D0152901

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48601132.325103%
B48601483.045267%
C48601142.345679%
D486156111.540835%

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 5010 4860 0 0 0.00% 0.00%
B 5010 4860 2 2 0.04% 0.04%
C 5010 4861 0 0 0.00% 0.00%
D 5011 4862 434 434 8.66% 8.93%

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 13 56407 450.25 596 579 124.0
A 13 254 7676 57.23 596 579 124.0
A 0 226 5205 37.31 596 579 124.0
B 4 80 16583 135.53 595 580 118.1
B 0 197 16425 134.2 595 580 118.1
B 12 111 14269 115.94 595 580 118.1
C 14 238 86866 630.94 569 572 136.8
C 0 207 14392 101.04 569 572 136.8
C 13 61 3986 24.96 569 572 136.8
D 7 238 833194 6038.91 555 537 137.9
D 1 52 397953 2882.29 555 537 137.9
D 13 168 392565 2843.21 555 537 137.9

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