ASTROSAT CZTI

Data Quality Report

Orbit 34773

Creation date: 2022-03-04T15:59:04.728749
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/AS1C07_004T01_9000004990_34773cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34773cztM0_level2_quad_clean.evt
Size (bytes)456,770,88082,221,120
Size435.6 MB 78.4 MB
Events in quadrant A2,758,944519,502
Events in quadrant B2,887,029533,720
Events in quadrant C3,119,726533,499
Events in quadrant D4,672,873496,461

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118223
B0120302
C0124502
D0176932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A581360.103217%
B5813210.361259%
C5813340.584896%
D5813901.548254%

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 9488 5815 0 0 0.00% 0.00%
B 9488 5815 7 7 0.07% 0.12%
C 9488 5815 19 19 0.20% 0.33%
D 9488 5815 94 94 0.99% 1.62%

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 50213 355.11 692 678 139.5
A 13 6 17253 118.82 692 678 139.5
A 15 169 10112 67.63 692 678 139.5
B 0 190 66698 495.16 691 675 133.3
B 5 255 44235 326.69 691 675 133.3
B 0 189 27677 202.51 691 675 133.3
C 15 214 250838 1587.85 677 685 157.5
C 14 67 118678 748.96 677 685 157.5
C 0 10 88170 555.31 677 685 157.5
D 8 195 1333300 8084.03 672 654 164.8
D 10 118 219695 1328.74 672 654 164.8
D 2 250 182157 1101.02 672 654 164.8

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