ASTROSAT CZTI

Data Quality Report

Orbit 47461

Creation date: 2024-07-08T01:48:59.750335
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/AS1A13_089T01_9000006330_47461cztM0_level2.fits modeM0/AS1A13_089T01_9000006330_47461cztM0_level2_quad_clean.evt
Size (bytes)557,651,520103,746,240
Size531.8 MB 98.9 MB
Events in quadrant A7,296,238702,408
Events in quadrant B3,909,583751,535
Events in quadrant C2,977,895727,592
Events in quadrant D5,967,685518,170

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263272
B0158092
C0132052
D0221272

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63303996.303318%
B63301862.938389%
C6330130.205371%
D6330139121.974724%

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 7540 6331 162 162 2.15% 2.56%
B 7540 6331 89 89 1.18% 1.41%
C 7540 6331 1 1 0.01% 0.02%
D 7539 6329 1197 1197 15.88% 18.91%

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 3905907 25933.51 723 709 150.6
A 9 191 352373 2335.32 723 709 150.6
A 14 235 171119 1131.65 723 709 150.6
B 5 32 801558 5645.24 734 713 141.9
B 0 190 72573 506.55 734 713 141.9
B 0 198 42094 291.7 734 713 141.9
C 3 233 94820 551.09 726 730 170.7
C 0 207 36692 210.63 726 730 170.7
C 12 249 10465 57.02 726 730 170.7
D 2 165 3034354 19254.7 612 593 157.6
D 2 249 319896 2026.55 612 593 157.6
D 12 128 95539 602.6 612 593 157.6

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