ASTROSAT CZTI

Data Quality Report

Orbit 51287

Creation date: 2025-03-22T22:08:24.252768
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_51287cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51287cztM0_level2_quad_clean.evt
Size (bytes)711,668,16080,219,520
Size678.7 MB 76.5 MB
Events in quadrant A8,841,794442,962
Events in quadrant B4,156,161612,393
Events in quadrant C7,044,883457,688
Events in quadrant D5,817,428478,709

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03071970
B01659329
C02529958
D02171647

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6247172327.581239%
B62463225.155299%
C6251133421.340586%
D624478712.604100%

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 7146 6259 1621 1621 22.68% 25.90%
B 7147 6259 207 207 2.90% 3.31%
C 7146 6262 1279 1279 17.90% 20.42%
D 7146 6256 668 668 9.35% 10.68%

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 2066921 13868.44 596 582 149.0
A 9 96 1762025 11822.1 596 582 149.0
A 12 250 1241925 8331.4 596 582 149.0
B 5 185 633665 4588.52 647 626 138.0
B 5 172 183099 1322.64 647 626 138.0
B 10 247 178497 1289.28 647 626 138.0
C 4 12 3834867 24380.09 574 570 157.3
C 10 171 353139 2241.78 574 570 157.3
C 13 3 180206 1142.2 574 570 157.3
D 2 216 1012867 5970.33 605 582 169.6
D 8 176 630756 3716.69 605 582 169.6
D 12 2 570383 3360.62 605 582 169.6

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