ASTROSAT CZTI

Data Quality Report

Orbit 39545

Creation date: 2024-06-27T22:05:56.424161
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_018T01_9000005488_39545cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39545cztM0_level2_quad_clean.evt
Size (bytes)398,252,16093,372,480
Size379.8 MB 89.0 MB
Events in quadrant A3,189,084642,555
Events in quadrant B2,481,965658,817
Events in quadrant C4,280,139603,345
Events in quadrant D4,359,607534,637

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131803
B0112542
C0164252
D0167792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5543320.577305%
B554340.072163%
C55432334.203500%
D55435169.309038%

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 7334 5544 18 18 0.25% 0.32%
B 7334 5544 0 0 0.00% 0.00%
C 7334 5544 275 275 3.75% 4.96%
D 7334 5544 447 447 6.09% 8.06%

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 455560 3648.07 613 600 124.7
A 15 222 307694 2462.41 613 600 124.7
A 2 79 35775 282.05 613 600 124.7
B 0 230 25463 210.84 611 594 118.0
B 5 255 23114 190.92 611 594 118.0
B 0 213 20178 166.03 611 594 118.0
C 9 187 1561666 11311.26 595 598 138.0
C 15 214 230975 1669.28 595 598 138.0
C 15 208 142603 1028.95 595 598 138.0
D 12 227 1060821 7489.1 580 563 141.6
D 12 0 727011 5131.24 580 563 141.6
D 13 249 266554 1878.82 580 563 141.6

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