ASTROSAT CZTI

Data Quality Report

Orbit 38708

Creation date: 2024-06-27T21:55:23.304900
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_054T01_9000005392_38708cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38708cztM0_level2_quad_clean.evt
Size (bytes)522,570,24090,596,160
Size498.4 MB 86.4 MB
Events in quadrant A2,813,746668,181
Events in quadrant B2,821,752677,380
Events in quadrant C4,464,871596,710
Events in quadrant D8,835,702432,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114643
B0117302
C0166502
D0299072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5255140.266413%
B52551342.549952%
C52554598.734539%
D5255192236.574691%

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 7347 5255 6 6 0.08% 0.11%
B 7347 5255 59 59 0.80% 1.12%
C 7347 5255 404 404 5.50% 7.69%
D 7347 5254 1908 1908 25.97% 36.32%

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 389566 3106.15 620 609 125.2
A 0 8 21865 169.75 620 609 125.2
A 13 254 7866 57.95 620 609 125.2
B 4 171 347947 2976.49 613 598 116.7
B 5 200 34055 286.7 613 598 116.7
B 0 230 18029 149.37 613 598 116.7
C 14 254 1467503 10864.7 585 590 135.0
C 3 110 455884 3372.14 585 590 135.0
C 15 214 214606 1585.11 585 590 135.0
D 2 16 5910191 43822.76 552 536 134.9
D 12 227 292979 2168.6 552 536 134.9
D 13 249 108605 801.38 552 536 134.9

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