ASTROSAT CZTI

Data Quality Report

Orbit 50851

Creation date: 2025-02-21T14:04:11.960176
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_9000006450_50851cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50851cztM0_level2_quad_clean.evt
Size (bytes)523,100,16096,989,760
Size498.9 MB 92.5 MB
Events in quadrant A5,018,129626,887
Events in quadrant B4,831,478672,522
Events in quadrant C4,768,999599,112
Events in quadrant D4,208,846556,592

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197471
B0191601
C0188761
D0174631

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69112343.385907%
B69122774.007523%
C69122553.689236%
D69122673.862847%

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 7696 6912 151 151 1.96% 2.18%
B 7697 6912 145 145 1.88% 2.10%
C 7697 6913 208 208 2.70% 3.01%
D 7697 6913 212 212 2.75% 3.07%

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 1400144 7973.68 717 696 175.5
A 4 191 152092 862.61 717 696 175.5
A 8 249 149065 845.37 717 696 175.5
B 5 172 1027886 6799.32 707 682 151.1
B 8 128 285858 1887.65 707 682 151.1
B 10 44 215261 1420.35 707 682 151.1
C 4 5 381482 2025.54 686 680 188.0
C 1 60 249239 1322.12 686 680 188.0
C 10 171 227424 1206.08 686 680 188.0
D 2 216 458764 2421.15 679 656 189.2
D 2 153 259631 1368.71 679 656 189.2
D 2 249 233538 1230.81 679 656 189.2

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