ASTROSAT CZTI

Data Quality Report

Orbit 39151

Creation date: 2024-06-27T22:01:09.341978
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_054T02_9000005444_39151cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39151cztM0_level2_quad_clean.evt
Size (bytes)1,032,203,520262,128,960
Size984.4 MB 250.0 MB
Events in quadrant A8,190,1241,787,914
Events in quadrant B7,300,1471,807,583
Events in quadrant C7,720,5241,723,026
Events in quadrant D13,761,0121,515,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346615
B0332154
C0335084
D0520664

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03280
B03280
C03280
D03280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15978380.237827%
B15978550.344223%
C15978440.275379%
D1597811557.228689%

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 21498 15982 17 17 0.08% 0.11%
B 21498 15982 26 26 0.12% 0.16%
C 21498 15982 25 25 0.12% 0.16%
D 21498 15982 865 865 4.02% 5.41%

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 1119873 3149.85 1770 1736 355.0
A 15 223 75547 207.93 1770 1736 355.0
A 13 248 66414 182.2 1770 1736 355.0
B 5 172 192183 571.01 1750 1699 333.6
B 5 200 71378 208.87 1750 1699 333.6
B 5 184 53593 155.56 1750 1699 333.6
C 15 214 658637 1665.09 1709 1719 394.5
C 9 187 253400 637.93 1709 1719 394.5
C 14 254 89337 222.08 1709 1719 394.5
D 12 235 5149222 12538.83 1680 1632 410.5
D 5 222 980604 2384.64 1680 1632 410.5
D 2 249 334156 809.98 1680 1632 410.5

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