ASTROSAT CZTI

Data Quality Report

Orbit 50549

Creation date: 2025-02-01T04:37:34.140732
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_50549cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50549cztM0_level2_quad_clean.evt
Size (bytes)741,674,88087,912,000
Size707.3 MB 83.8 MB
Events in quadrant A6,860,094557,545
Events in quadrant B4,264,049671,143
Events in quadrant C10,453,619418,070
Events in quadrant D5,363,455552,999

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248641
B0172881
C0356191
D0205571

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6630100115.098039%
B66303034.570136%
C6630253238.190045%
D66313585.398884%

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 7770 6631 965 965 12.42% 14.55%
B 7770 6630 223 223 2.87% 3.36%
C 7770 6631 2133 2133 27.45% 32.17%
D 7771 6631 317 317 4.08% 4.78%

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 12 80 1687607 9972.44 673 654 169.2
A 8 247 1092115 6452.19 673 654 169.2
A 3 130 541281 3195.92 673 654 169.2
B 7 0 337713 2286.48 694 670 147.4
B 15 54 229450 1552.03 694 670 147.4
B 4 170 138880 937.61 694 670 147.4
C 15 178 2484950 15511.76 580 577 160.2
C 10 69 2175828 13581.69 580 577 160.2
C 15 214 934282 5829.81 580 577 160.2
D 3 12 979715 5185.76 672 649 188.8
D 7 96 429618 2272.09 672 649 188.8
D 7 60 295176 1560.0 672 649 188.8

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