ASTROSAT CZTI

Data Quality Report

Orbit 42174

Creation date: 2024-06-27T22:37:45.923560
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_42174cztM0_level2.fits modeM0/AS1A11_032T04_9000005766_42174cztM0_level2_quad_clean.evt
Size (bytes)339,505,92086,662,080
Size323.8 MB 82.6 MB
Events in quadrant A4,150,280541,564
Events in quadrant B2,599,058601,005
Events in quadrant C2,495,865574,757
Events in quadrant D2,896,245524,085

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156572
B0115842
C0109572
D0126612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A54654788.746569%
B5465360.658737%
C546530.054895%
D5465881.610247%

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 6958 5466 407 407 5.85% 7.45%
B 6958 5466 17 17 0.24% 0.31%
C 6958 5466 0 0 0.00% 0.00%
D 6958 5466 85 85 1.22% 1.56%

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 15 223 1333670 11127.47 576 564 119.8
A 10 83 533403 4447.62 576 564 119.8
A 12 189 43238 356.2 576 564 119.8
B 0 229 85912 740.5 590 574 115.2
B 15 35 72450 623.68 590 574 115.2
B 5 255 56068 481.53 590 574 115.2
C 15 214 230005 1673.79 579 582 137.1
C 12 249 5063 32.69 579 582 137.1
C 0 239 4201 26.4 579 582 137.1
D 13 249 212609 1505.74 573 558 140.8
D 10 199 171364 1212.87 573 558 140.8
D 12 6 138850 981.99 573 558 140.8

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