ASTROSAT CZTI

Data Quality Report

Orbit 48601

Creation date: 2024-09-23T01:05:11.729551
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/AS1A13_037T01_9000006436_48601cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48601cztM0_level2_quad_clean.evt
Size (bytes)556,119,36094,106,880
Size530.4 MB 89.7 MB
Events in quadrant A6,401,859638,777
Events in quadrant B6,888,586558,691
Events in quadrant C2,634,060645,492
Events in quadrant D4,169,831564,177

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233621
B0248702
C0128941
D0172291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63372103.313871%
B6337136121.477040%
C6337370.583872%
D63373555.602020%

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 7182 6338 45 45 0.63% 0.71%
B 7182 6338 990 990 13.78% 15.62%
C 7182 6338 2 2 0.03% 0.03%
D 7182 6338 264 264 3.68% 4.17%

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 3801215 27209.22 662 647 139.7
A 13 248 33239 233.33 662 647 139.7
A 13 254 12300 83.43 662 647 139.7
B 12 16 4162531 34214.14 616 595 121.6
B 4 21 73822 601.98 616 595 121.6
B 0 183 73307 597.75 616 595 121.6
C 14 254 42515 266.85 663 667 156.8
C 12 249 5347 29.84 663 667 156.8
C 13 61 4393 23.76 663 667 156.8
D 2 165 741353 4589.37 646 626 161.4
D 2 249 730706 4523.4 646 626 161.4
D 10 199 79283 487.34 646 626 161.4

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