ASTROSAT CZTI

Data Quality Report

Orbit 46677

Creation date: 2024-06-27T23:26:22.302734
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_092T19_9000006252_46677cztM0_level2.fits modeM0/AS1A13_092T19_9000006252_46677cztM0_level2_quad_clean.evt
Size (bytes)356,561,28079,752,960
Size340.0 MB 76.1 MB
Events in quadrant A4,938,121514,273
Events in quadrant B2,601,005558,378
Events in quadrant C2,105,653536,420
Events in quadrant D3,174,264463,280

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177901
B0110431
C099051
D0129021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48802795.717213%
B4880440.901639%
C488060.122951%
D48802585.286885%

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 6115 4881 203 203 3.32% 4.16%
B 6115 4881 5 5 0.08% 0.10%
C 6115 4881 0 0 0.00% 0.00%
D 6115 4881 194 194 3.17% 3.97%

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 2381434 21619.45 531 521 110.1
A 15 235 459472 4167.42 531 521 110.1
A 0 243 12550 109.23 531 521 110.1
B 0 189 217917 2010.37 545 529 108.1
B 0 198 57988 531.37 545 529 108.1
B 4 171 45496 415.85 545 529 108.1
C 3 233 7555 55.68 534 537 126.1
C 1 3 4695 32.99 534 537 126.1
C 13 61 3685 24.97 534 537 126.1
D 1 52 371658 2935.34 508 492 126.4
D 5 171 344646 2721.72 508 492 126.4
D 13 249 233357 1841.6 508 492 126.4

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