ASTROSAT CZTI

Data Quality Report

Orbit 39412

Creation date: 2024-06-27T22:04:14.537514
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/AS1T05_074T01_9000005472_39412cztM0_level2.fits modeM0/AS1T05_074T01_9000005472_39412cztM0_level2_quad_clean.evt
Size (bytes)587,606,40085,668,480
Size560.4 MB 81.7 MB
Events in quadrant A3,023,590630,731
Events in quadrant B5,653,173520,167
Events in quadrant C4,205,827586,196
Events in quadrant D8,431,995461,790

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126353
B0206922
C0160302
D0290042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5639180.319206%
B5639118921.085299%
C56392835.018620%
D5639136424.188686%

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 7192 5640 6 6 0.08% 0.11%
B 7192 5640 978 978 13.60% 17.34%
C 7192 5640 255 255 3.55% 4.52%
D 7192 5640 1338 1338 18.60% 23.72%

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 469443 3718.26 617 605 126.1
A 13 248 100123 789.26 617 605 126.1
A 7 192 31251 243.05 617 605 126.1
B 6 203 2760126 24937.09 577 561 110.7
B 5 172 578992 5227.05 577 561 110.7
B 15 85 24336 214.85 577 561 110.7
C 15 208 1528700 10895.1 593 596 140.3
C 15 214 234566 1668.16 593 596 140.3
C 14 254 61385 433.41 593 596 140.3
D 12 235 5432435 39026.13 564 546 139.2
D 12 227 310191 2224.69 564 546 139.2
D 13 249 226196 1621.21 564 546 139.2

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