ASTROSAT CZTI

Data Quality Report

Orbit 50493

Creation date: 2025-01-28T10:23:39.141989
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/AS1T05_239T01_9000006444_50493cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50493cztM0_level2_quad_clean.evt
Size (bytes)589,968,00094,602,240
Size562.6 MB 90.2 MB
Events in quadrant A4,129,987635,369
Events in quadrant B4,187,994695,072
Events in quadrant C7,471,697531,635
Events in quadrant D5,537,128542,906

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167723
B0169722
C0266682
D0211722

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65963305.003032%
B65963655.533657%
C6596135720.573075%
D659668910.445725%

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 7761 6597 211 211 2.72% 3.20%
B 7761 6597 203 203 2.62% 3.08%
C 7761 6597 1206 1206 15.54% 18.28%
D 7761 6597 620 620 7.99% 9.40%

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 10 253 672231 3795.66 722 706 176.9
A 8 38 107417 603.16 722 706 176.9
A 4 249 106224 596.42 722 706 176.9
B 7 0 517461 3403.34 721 694 151.8
B 4 206 343201 2255.69 721 694 151.8
B 10 247 89099 582.22 721 694 151.8
C 15 196 1688323 9380.12 653 648 179.9
C 15 235 1267699 7042.28 653 648 179.9
C 15 162 461076 2559.06 653 648 179.9
D 7 61 929599 4911.22 674 651 189.1
D 11 161 756633 3996.77 674 651 189.1
D 8 246 334758 1766.37 674 651 189.1

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