ASTROSAT CZTI

Data Quality Report

Orbit 39495

Creation date: 2024-06-27T22:05:18.824163
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/AS1C07_001T02_9000005486_39495cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39495cztM0_level2_quad_clean.evt
Size (bytes)351,074,88095,984,640
Size334.8 MB 91.5 MB
Events in quadrant A3,126,569640,015
Events in quadrant B2,949,805658,549
Events in quadrant C3,444,983620,404
Events in quadrant D3,013,527573,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128813
B0129722
C0138982
D0133432

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5919310.523737%
B5919470.794053%
C5919751.267106%
D5919530.895422%

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 8722 5921 17 17 0.19% 0.29%
B 8722 5921 33 33 0.38% 0.56%
C 8722 5921 66 66 0.76% 1.11%
D 8722 5921 53 53 0.61% 0.90%

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 461768 3592.99 630 616 128.3
A 6 10 134224 1040.99 630 616 128.3
A 2 79 77804 601.4 630 616 128.3
B 5 172 451257 3701.85 627 609 121.7
B 12 111 15509 122.4 627 609 121.7
B 11 111 14168 111.38 627 609 121.7
C 15 208 701337 4917.16 610 615 142.5
C 15 214 249542 1746.79 610 615 142.5
C 3 233 107655 751.13 610 615 142.5
D 12 227 353065 2346.65 611 593 150.2
D 13 249 127191 842.85 611 593 150.2
D 2 249 72411 478.14 611 593 150.2

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