ASTROSAT CZTI

Data Quality Report

Orbit 06859

Creation date: 2024-06-27T15:13:18.362795
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/AS1G06_164T01_9000000946_06859cztM0_level2.evt modeM0/AS1G06_164T01_9000000946_06859cztM0_level2_quad_clean.evt
Size (bytes)472,302,72084,660,480
Size450.4 MB 80.7 MB
Events in quadrant A3,356,990537,152
Events in quadrant B3,424,716535,947
Events in quadrant C3,394,867519,230
Events in quadrant D3,676,682509,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142603
B0143592
C0141892
D0151052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66371472.214856%
B66371482.229923%
C66371261.898448%
D66371321.988850%

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 7847 6637 0 0 0.00% 0.00%
B 7847 6638 7 7 0.09% 0.11%
C 7847 6638 0 0 0.00% 0.00%
D 7847 6638 10 10 0.13% 0.15%

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 13 251 31746 179.53 858 840 172.1
A 13 248 11062 59.38 858 840 172.1
A 0 226 8283 43.24 858 840 172.1
B 4 48 33137 202.45 855 836 159.6
B 15 204 30792 187.75 855 836 159.6
B 0 219 25766 156.25 855 836 159.6
C 9 247 110838 580.5 827 832 189.5
C 9 68 39629 204.73 827 832 189.5
C 9 16 14477 72.0 827 832 189.5
D 8 195 253749 1260.26 833 808 200.7
D 13 169 76021 374.74 833 808 200.7
D 14 34 50277 246.48 833 808 200.7

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