ASTROSAT CZTI

Data Quality Report

Orbit 46881

Creation date: 2024-06-27T23:28:53.954742
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_053T01_9000006274_46881cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46881cztM0_level2_quad_clean.evt
Size (bytes)486,204,48096,960,960
Size463.7 MB 92.5 MB
Events in quadrant A5,657,338667,178
Events in quadrant B5,155,495641,057
Events in quadrant C3,369,645621,363
Events in quadrant D3,366,409601,960

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206481
B0192891
C0142411
D0140321

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57832454.236555%
B578364611.170673%
C57843516.068465%
D57841682.904564%

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 6998 5783 45 45 0.64% 0.78%
B 6998 5784 378 378 5.40% 6.54%
C 6999 5785 253 253 3.61% 4.37%
D 6999 5785 89 89 1.27% 1.54%

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 3030157 22207.35 664 651 136.4
A 9 191 20647 146.58 664 651 136.4
A 8 255 12506 86.9 664 651 136.4
B 3 112 2338245 18680.58 647 628 125.1
B 15 36 68834 545.05 647 628 125.1
B 5 32 48368 381.5 647 628 125.1
C 14 254 924186 6341.69 623 626 145.6
C 12 2 4458 26.31 623 626 145.6
C 13 61 4327 25.41 623 626 145.6
D 2 249 368878 2321.03 646 626 158.7
D 1 52 287868 1810.44 646 626 158.7
D 13 249 120163 753.42 646 626 158.7

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