ASTROSAT CZTI

Data Quality Report

Orbit 39543

Creation date: 2024-06-27T22:05:55.439840
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/AS1A12_018T01_9000005488_39543cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39543cztM0_level2_quad_clean.evt
Size (bytes)401,382,72084,634,560
Size382.8 MB 80.7 MB
Events in quadrant A3,109,124590,310
Events in quadrant B2,592,943580,873
Events in quadrant C4,004,692554,471
Events in quadrant D4,738,799466,001

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126692
B0115291
C0153531
D0177161

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5298180.339751%
B52981943.661759%
C52981663.133258%
D529874113.986410%

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 6941 5299 7 7 0.10% 0.13%
B 6941 5299 82 82 1.18% 1.55%
C 6941 5299 174 174 2.51% 3.28%
D 6941 5299 611 611 8.80% 11.53%

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 15 222 434993 3718.25 574 562 116.8
A 10 83 379545 3243.68 574 562 116.8
A 2 79 45055 380.81 574 562 116.8
B 5 255 376066 3483.58 552 535 107.8
B 0 230 16720 150.14 552 535 107.8
B 0 213 15113 135.23 552 535 107.8
C 9 187 1413667 10854.17 556 559 130.2
C 15 214 218050 1670.56 556 559 130.2
C 15 208 182678 1398.87 556 559 130.2
D 12 0 1484517 11503.07 527 511 129.0
D 12 227 602219 4664.06 527 511 129.0
D 2 249 212300 1641.65 527 511 129.0

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