ASTROSAT CZTI

Data Quality Report

Orbit 40594

Creation date: 2024-06-27T22:17:59.477492
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_054T02_9000005550_40594cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40594cztM0_level2_quad_clean.evt
Size (bytes)384,413,76086,103,360
Size366.6 MB 82.1 MB
Events in quadrant A3,101,226616,038
Events in quadrant B4,048,647578,760
Events in quadrant C2,738,914593,780
Events in quadrant D3,907,489429,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125423
B0157072
C0115932
D0153712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5551581.044857%
B55515459.818051%
C555190.162133%
D5551149826.986129%

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 7344 5551 45 45 0.61% 0.81%
B 7344 5552 483 483 6.58% 8.70%
C 7344 5552 6 6 0.08% 0.11%
D 7344 5552 157 157 2.14% 2.83%

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 528404 4264.2 601 589 123.8
A 2 79 194219 1564.33 601 589 123.8
A 3 1 36537 290.42 601 589 123.8
B 5 255 1431825 13000.33 574 560 110.1
B 0 190 177236 1604.77 574 560 110.1
B 3 112 67458 607.64 574 560 110.1
C 15 214 246956 1809.98 585 587 136.1
C 14 254 169758 1242.83 585 587 136.1
C 0 10 19351 137.85 585 587 136.1
D 12 227 515497 4015.38 514 499 128.3
D 2 249 396092 3084.4 514 499 128.3
D 2 250 297030 2312.02 514 499 128.3

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