ASTROSAT CZTI

Data Quality Report

Orbit 39378

Creation date: 2024-06-27T22:03:52.312497
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_9000005470_39378cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39378cztM0_level2_quad_clean.evt
Size (bytes)463,628,16087,546,240
Size442.2 MB 83.5 MB
Events in quadrant A2,794,593621,745
Events in quadrant B3,190,468599,029
Events in quadrant C3,718,999589,525
Events in quadrant D7,025,219451,095

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116512
B0133721
C0146971
D0247591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5567150.269445%
B55673245.820011%
C5567591.059817%
D5567127122.830968%

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 7150 5568 5 5 0.07% 0.09%
B 7150 5568 269 269 3.76% 4.83%
C 7150 5568 68 68 0.95% 1.22%
D 7150 5568 1075 1075 15.03% 19.31%

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 10 83 440263 3578.16 606 594 122.9
A 13 254 7598 57.0 606 594 122.9
A 3 137 6582 48.73 606 594 122.9
B 5 200 676896 6013.21 577 560 112.5
B 5 172 179994 1595.32 577 560 112.5
B 4 170 41779 366.47 577 560 112.5
C 9 187 960324 7055.12 583 586 136.0
C 15 214 234854 1722.13 583 586 136.0
C 14 254 216890 1590.07 583 586 136.0
D 12 235 4329443 33293.26 532 514 130.0
D 13 249 199114 1527.41 532 514 130.0
D 7 38 141053 1080.87 532 514 130.0

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