ASTROSAT CZTI

Data Quality Report

Orbit 50738

Creation date: 2025-02-13T21:26:12.794800
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/AS1C07_001T01_9000006450_50738cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50738cztM0_level2_quad_clean.evt
Size (bytes)553,530,24086,281,920
Size527.9 MB 82.3 MB
Events in quadrant A7,452,979515,606
Events in quadrant B3,278,218640,495
Events in quadrant C4,902,001528,649
Events in quadrant D4,381,884500,045

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02672691
B01401359
C01868955
D01724845

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6118103716.949984%
B61211422.319882%
C61195408.824971%
D61234046.598073%

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 7193 6122 852 852 11.84% 13.92%
B 7202 6125 44 44 0.61% 0.72%
C 7197 6124 421 421 5.85% 6.87%
D 7214 6129 315 315 4.37% 5.14%

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 4 4 3928408 24889.55 631 614 157.8
A 6 195 285985 1808.33 631 614 157.8
A 10 253 135935 857.5 631 614 157.8
B 5 185 139824 992.7 658 634 140.2
B 10 246 122762 871.01 658 634 140.2
B 10 247 60107 424.16 658 634 140.2
C 5 10 1324294 7740.59 627 620 171.0
C 1 3 228664 1333.55 627 620 171.0
C 12 247 211566 1233.57 627 620 171.0
D 1 47 428468 2414.42 628 604 177.2
D 2 249 270477 1522.88 628 604 177.2
D 15 174 256206 1442.35 628 604 177.2

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