ASTROSAT CZTI

Data Quality Report

Orbit 51273

Creation date: 2025-03-22T15:32:10.913989
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/AS1C07_001T01_9000006454_51273cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51273cztM0_level2_quad_clean.evt
Size (bytes)800,386,56082,635,840
Size763.3 MB 78.8 MB
Events in quadrant A5,691,661583,831
Events in quadrant B4,362,187642,384
Events in quadrant C13,032,351303,744
Events in quadrant D6,030,098510,870

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215092
B0176182
C0432422
D0226932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66104576.913767%
B66104226.384266%
C6610365455.279879%
D661082112.420575%

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 7610 6610 243 243 3.19% 3.68%
B 7610 6610 239 239 3.14% 3.62%
C 7610 6610 3500 3500 45.99% 52.95%
D 7610 6610 772 772 10.14% 11.68%

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 3 1552614 9181.6 682 665 169.0
A 12 80 350155 2067.64 682 665 169.0
A 12 250 248600 1466.83 682 665 169.0
B 12 18 662490 4578.12 680 659 144.6
B 0 172 224948 1551.49 680 659 144.6
B 5 185 220043 1517.56 680 659 144.6
C 4 12 7415806 52606.12 507 503 141.0
C 10 171 3253868 23080.23 507 503 141.0
C 3 233 64775 455.96 507 503 141.0
D 8 176 1487154 8148.35 653 630 182.4
D 6 42 593506 3249.84 653 630 182.4
D 6 228 366879 2007.59 653 630 182.4

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