ASTROSAT CZTI

Data Quality Report

Orbit 42180

Creation date: 2024-06-27T22:37:49.229366
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_032T04_9000005766_42180cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42180cztM0_level2_quad_clean.evt
Size (bytes)314,841,60090,984,960
Size300.3 MB 86.8 MB
Events in quadrant A3,199,709605,139
Events in quadrant B2,500,302622,632
Events in quadrant C2,531,439594,971
Events in quadrant D2,994,881548,016

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129162
B0113002
C0110873
D0127712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5491851.547988%
B5491110.200328%
C549050.091075%
D5490811.475410%

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 7194 5492 70 70 0.97% 1.27%
B 7194 5492 4 4 0.06% 0.07%
C 7193 5491 0 0 0.00% 0.00%
D 7193 5491 69 69 0.96% 1.26%

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 576982 4671.49 597 585 123.4
A 15 222 174445 1409.07 597 585 123.4
A 14 24 41091 328.29 597 585 123.4
B 0 229 61826 533.88 595 580 114.7
B 5 255 44056 378.98 595 580 114.7
B 15 85 22576 191.74 595 580 114.7
C 15 214 230234 1676.56 586 589 137.0
C 15 159 9021 61.56 586 589 137.0
C 12 249 6146 40.57 586 589 137.0
D 1 52 162376 1121.08 587 570 144.3
D 13 249 122530 845.01 587 570 144.3
D 12 218 115554 796.67 587 570 144.3

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