ASTROSAT CZTI

Data Quality Report

Orbit 36672

Creation date: 2024-06-27T21:30:04.273618
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/AS1A11_049T05_9000005232_36672cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36672cztM0_level2_quad_clean.evt
Size (bytes)479,554,56071,323,200
Size457.3 MB 68.0 MB
Events in quadrant A2,883,052453,857
Events in quadrant B3,313,991445,583
Events in quadrant C3,484,814436,800
Events in quadrant D4,447,135417,055

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122173
B0135502
C0140382
D0171212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5814150.257998%
B58141182.029584%
C58142243.852769%
D58142664.575163%

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 7127 5815 4 4 0.06% 0.07%
B 7127 5815 65 65 0.91% 1.12%
C 7127 5815 163 163 2.29% 2.80%
D 7127 5815 238 238 3.34% 4.09%

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 228303 1647.7 675 662 138.2
A 9 143 24588 173.18 675 662 138.2
A 13 6 19729 138.01 675 662 138.2
B 5 255 300404 2338.1 664 646 128.2
B 5 200 108960 844.85 664 646 128.2
B 0 189 83928 649.6 664 646 128.2
C 0 207 336800 2255.82 640 643 149.0
C 15 214 265352 1776.36 640 643 149.0
C 0 10 198648 1328.74 640 643 149.0
D 7 223 559329 3550.49 642 622 157.4
D 2 249 268557 1702.68 642 622 157.4
D 12 227 211738 1341.61 642 622 157.4

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