ASTROSAT CZTI

Data Quality Report

Orbit 38872

Creation date: 2024-06-27T21:57:31.555723
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_077T06_9000005408_38872cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38872cztM0_level2_quad_clean.evt
Size (bytes)413,167,68099,861,120
Size394.0 MB 95.2 MB
Events in quadrant A3,570,421672,018
Events in quadrant B3,878,506685,576
Events in quadrant C2,817,776661,837
Events in quadrant D4,557,586581,695

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144103
B0154392
C0122072
D0177272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6046210.347337%
B60461131.869004%
C604680.132319%
D60463515.805491%

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 9033 6049 6 6 0.07% 0.10%
B 9033 6049 72 72 0.80% 1.19%
C 9033 6049 3 3 0.03% 0.05%
D 9033 6049 300 300 3.32% 4.96%

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 12 16 461382 3400.1 669 655 135.5
A 10 83 435628 3210.04 669 655 135.5
A 12 194 73094 534.59 669 655 135.5
B 4 251 877250 6779.88 663 645 129.3
B 4 171 218848 1687.64 663 645 129.3
B 5 184 82790 635.33 663 645 129.3
C 15 214 248914 1626.77 653 658 152.6
C 0 10 15559 97.64 653 658 152.6
C 3 233 7921 47.59 653 658 152.6
D 2 250 992790 6381.21 635 614 155.5
D 12 227 603372 3876.66 635 614 155.5
D 2 249 124393 796.09 635 614 155.5

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