ASTROSAT CZTI

Data Quality Report

Orbit 04220

Creation date: 2024-06-27T14:38:57.521750
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/AS1G05_240T01_9000000536_04220cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04220cztM0_level2_quad_clean.evt
Size (bytes)1,379,992,320165,349,440
Size1.3 GB 157.7 MB
Events in quadrant A9,071,7111,000,309
Events in quadrant B8,979,2381,005,231
Events in quadrant C10,129,076972,716
Events in quadrant D12,505,102898,814

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040058
B039957
C040062
D039844

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0192
C0191
D0191

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0458437307
B0451847466
C0494477907
D06345315052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165504372.640483%
B164583422.078017%
C1655511016.650559%
D1571912027.646797%

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 21462 18490 198 198 0.92% 1.07%
B 21467 18383 136 136 0.63% 0.74%
C 21467 18374 888 888 4.14% 4.83%
D 21463 17784 761 761 3.55% 4.28%

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 50 890200 2301.02 1893 1847 386.1
A 12 247 613313 1583.83 1893 1847 386.1
A 15 234 131925 336.93 1893 1847 386.1
B 10 16 560665 1516.59 1906 1859 368.5
B 3 0 343676 927.68 1906 1859 368.5
B 15 204 206753 556.08 1906 1859 368.5
C 0 239 2988601 7185.0 1786 1798 415.7
C 9 144 128303 304.32 1786 1798 415.7
C 14 48 19968 43.71 1786 1798 415.7
D 2 232 2704581 6565.5 1701 1649 411.7
D 8 112 2266026 5500.23 1701 1649 411.7
D 11 132 701962 1701.08 1701 1649 411.7

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