ASTROSAT CZTI

Data Quality Report

Orbit 33779

Creation date: 2024-06-27T20:52:34.150186
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/AS1A11_086T01_9000004820_33779cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33779cztM0_level2_quad_clean.evt
Size (bytes)1,719,817,920187,669,440
Size1.6 GB 179.0 MB
Events in quadrant A14,484,4861,120,921
Events in quadrant B10,500,9091,164,793
Events in quadrant C10,043,4251,194,819
Events in quadrant D15,984,6201,102,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0542435
B0415814
C0401134
D0585594

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15952204912.844784%
B159529676.061936%
C159522701.692578%
D1595213868.688566%

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 21413 15956 1459 1459 6.81% 9.14%
B 21413 15956 685 685 3.20% 4.29%
C 21413 15956 219 219 1.02% 1.37%
D 21413 15956 1342 1342 6.27% 8.41%

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 15 237 5559077 15897.08 1760 1727 349.6
A 15 169 1990360 5688.59 1760 1727 349.6
A 9 191 41835 114.73 1760 1727 349.6
B 5 172 1803246 5207.61 1818 1770 345.9
B 4 251 669782 1931.05 1818 1770 345.9
B 0 190 232035 665.64 1818 1770 345.9
C 3 233 1496208 3600.94 1812 1828 415.0
C 15 214 692744 1664.87 1812 1828 415.0
C 0 10 356622 854.93 1812 1828 415.0
D 12 235 3751583 8672.85 1783 1730 432.4
D 8 195 2940765 6797.55 1783 1730 432.4
D 1 47 850566 1963.23 1783 1730 432.4

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