ASTROSAT CZTI

Data Quality Report

Orbit 39690

Creation date: 2024-06-27T22:07:46.692030
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_051T01_9000005490_39690cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39690cztM0_level2_quad_clean.evt
Size (bytes)629,706,24082,653,120
Size600.5 MB 78.8 MB
Events in quadrant A10,656,026342,487
Events in quadrant B2,913,953648,750
Events in quadrant C6,127,133562,710
Events in quadrant D3,197,607573,535

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353303
B0120572
C0219522
D0131002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5353311158.116944%
B5353490.915375%
C535369412.964693%
D5353901.681300%

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 7145 5354 2568 2568 35.94% 47.96%
B 7145 5354 38 38 0.53% 0.71%
C 7145 5354 662 662 9.27% 12.36%
D 7145 5354 78 78 1.09% 1.46%

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 7649056 71647.97 521 514 106.8
A 15 174 544189 5092.89 521 514 106.8
A 10 83 390598 3654.12 521 514 106.8
B 5 172 276249 2326.15 613 597 118.5
B 0 229 112247 942.18 613 597 118.5
B 10 246 84733 710.0 613 597 118.5
C 15 208 2672051 19867.67 573 578 134.5
C 9 187 975789 7252.62 573 578 134.5
C 15 214 217064 1610.0 573 578 134.5
D 12 233 483081 3289.43 599 582 146.7
D 13 249 191428 1301.09 599 582 146.7
D 2 250 67841 458.54 599 582 146.7

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