ASTROSAT CZTI

Data Quality Report

Orbit 20181029_A05_012T02_9000002468_level2

Creation date: 2025-11-25T12:25:17.745535
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/AS1A05_012T02_9000002468cztM0_level2.fits modeM0/AS1A05_012T02_9000002468cztM0_level2_quad_clean.evt
Size (bytes)426,360,960341,737,920
Size406.6 MB 325.9 MB
Events in quadrant A2,581,1241,841,400
Events in quadrant B2,553,7181,968,390
Events in quadrant C2,628,2841,903,425
Events in quadrant D2,125,5501,615,241

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01253260
B0976090
C0915180
D01881710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0830

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08920
B08920
C08920
D08920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4399737338.484669%
B439975691.293270%
C439975441.236448%
D43997708716.107916%

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 52132 43963 0 0 0.00% 0.00%
B 52132 43996 0 0 0.00% 0.00%
C 52132 43997 0 0 0.00% 0.00%
D 52132 43956 0 0 0.00% 0.00%

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 0 29 2486 11.21 672 633 165.4
A 7 110 2087 8.79 672 633 165.4
A 0 30 1992 8.22 672 633 165.4
B 2 9 2147 11.24 676 648 133.4
B 2 8 1784 8.52 676 648 133.4
B 3 17 1669 7.66 676 648 133.4
C 2 191 1805 6.52 694 651 177.0
C 3 126 1749 6.2 694 651 177.0
C 3 158 1740 6.15 694 651 177.0
D 3 14 1507 5.99 606 553 159.2
D 6 231 1498 5.94 606 553 159.2
D 6 67 1496 5.92 606 553 159.2

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