ASTROSAT CZTI

Data Quality Report

Orbit 38623

Creation date: 2024-06-27T21:54:15.315241
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_052T04_9000005388_38623cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38623cztM0_level2_quad_clean.evt
Size (bytes)471,130,56086,143,680
Size449.3 MB 82.2 MB
Events in quadrant A2,794,855632,917
Events in quadrant B3,320,680639,505
Events in quadrant C2,832,616617,504
Events in quadrant D8,105,053370,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112243
B0130362
C0114542
D0275322

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4974240.482509%
B4974881.769200%
C4974611.226377%
D4974198339.867310%

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 7067 4975 9 9 0.13% 0.18%
B 7067 4975 56 56 0.79% 1.13%
C 7067 4975 65 65 0.92% 1.31%
D 7067 4975 2064 2064 29.21% 41.49%

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 423404 3557.19 595 585 118.9
A 13 248 33497 276.89 595 585 118.9
A 13 6 9753 77.13 595 585 118.9
B 4 171 490880 4440.73 584 570 110.4
B 5 184 288732 2609.88 584 570 110.4
B 0 186 70943 637.37 584 570 110.4
C 14 254 362049 2730.39 571 574 132.4
C 15 214 204477 1540.17 571 574 132.4
C 0 10 31863 236.34 571 574 132.4
D 12 227 3852748 32749.95 478 463 117.6
D 2 249 833597 7082.83 478 463 117.6
D 2 16 380119 3227.62 478 463 117.6

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