ASTROSAT CZTI

Data Quality Report

Orbit 43399

Creation date: 2024-06-27T22:51:31.552913
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_018T01_9000005874_43399cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43399cztM0_level2_quad_clean.evt
Size (bytes)325,149,12088,657,920
Size310.1 MB 84.6 MB
Events in quadrant A3,392,825583,249
Events in quadrant B2,448,015614,447
Events in quadrant C2,717,034584,140
Events in quadrant D3,062,418529,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134662
B0110553
C0115312
D0129362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53321893.544636%
B5331240.450197%
C5331260.487713%
D53311302.438567%

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 7155 5333 126 126 1.76% 2.36%
B 7154 5332 12 12 0.17% 0.23%
C 7154 5332 26 26 0.36% 0.49%
D 7154 5332 130 130 1.82% 2.44%

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 614220 5282.11 564 553 116.2
A 15 237 414149 3560.01 564 553 116.2
A 13 248 162762 1396.21 564 553 116.2
B 0 190 58985 530.49 576 561 110.1
B 0 189 35798 319.95 576 561 110.1
B 5 255 27136 241.3 576 561 110.1
C 15 214 221455 1674.6 567 571 131.9
C 15 111 137015 1034.43 567 571 131.9
C 3 233 99778 752.12 567 571 131.9
D 1 52 254070 1853.48 558 539 136.8
D 12 6 238889 1742.5 558 539 136.8
D 12 16 112620 819.39 558 539 136.8

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