ASTROSAT CZTI

Data Quality Report

Orbit 40886

Creation date: 2024-06-27T22:21:47.114788
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/AS1A12_097T01_9000005574_40886cztM0_level2.fits modeM0/AS1A12_097T01_9000005574_40886cztM0_level2_quad_clean.evt
Size (bytes)470,427,840101,741,760
Size448.6 MB 97.0 MB
Events in quadrant A3,481,894682,279
Events in quadrant B4,494,856687,213
Events in quadrant C3,042,276683,022
Events in quadrant D5,897,110580,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140233
B0176262
C0130122
D0218302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6406200.312207%
B64063625.650952%
C6406130.202935%
D64065728.929129%

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 9061 6408 13 13 0.14% 0.20%
B 9061 6408 212 212 2.34% 3.31%
C 9061 6408 5 5 0.06% 0.08%
D 9061 6408 462 462 5.10% 7.21%

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 600396 4090.87 706 691 146.6
A 13 248 65590 442.71 706 691 146.6
A 12 189 64626 436.13 706 691 146.6
B 4 171 720649 5296.31 694 675 135.9
B 5 255 616780 4532.23 694 675 135.9
B 0 190 217341 1593.85 694 675 135.9
C 15 214 273106 1668.85 694 698 163.2
C 0 10 50769 306.75 694 698 163.2
C 0 207 6120 33.22 694 698 163.2
D 12 79 1341031 8190.24 668 651 163.7
D 13 249 883810 5396.44 668 651 163.7
D 2 249 448709 2737.81 668 651 163.7

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