ASTROSAT CZTI

Data Quality Report

Orbit 39311

Creation date: 2024-06-27T22:03:03.776219
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_102T01_9000005466_39311cztM0_level2.fits modeM0/AS1A12_102T01_9000005466_39311cztM0_level2_quad_clean.evt
Size (bytes)550,627,20075,355,200
Size525.1 MB 71.9 MB
Events in quadrant A2,707,126590,322
Events in quadrant B2,472,224601,593
Events in quadrant C2,634,021582,785
Events in quadrant D12,149,411130,665

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114692
B0112131
C0113441
D0397651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5384160.297177%
B5384450.835810%
C538470.130015%
D5384427079.309064%

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 6997 5385 6 6 0.09% 0.11%
B 6997 5385 28 28 0.40% 0.52%
C 6997 5385 3 3 0.04% 0.06%
D 6996 5383 3528 3528 50.43% 65.54%

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 355485 2958.27 585 571 120.0
A 13 248 59738 493.17 585 571 120.0
A 15 222 25906 211.17 585 571 120.0
B 5 172 119283 1045.87 582 567 113.5
B 5 255 29025 250.71 582 567 113.5
B 5 184 25763 221.97 582 567 113.5
C 15 214 238964 1755.35 575 577 135.8
C 9 187 130755 958.56 575 577 135.8
C 15 159 10517 73.19 575 577 135.8
D 12 235 10082764 123448.99 330 321 81.7
D 13 249 264341 3232.65 330 321 81.7
D 12 227 251170 3071.38 330 321 81.7

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