ASTROSAT CZTI

Data Quality Report

Orbit 44794

Creation date: 2024-06-27T23:06:38.985642
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_004T13_9000006022_44794cztM0_level2.fits modeM0/AS1A13_004T13_9000006022_44794cztM0_level2_quad_clean.evt
Size (bytes)597,510,720102,876,480
Size569.8 MB 98.1 MB
Events in quadrant A8,194,085620,067
Events in quadrant B4,231,617722,961
Events in quadrant C2,891,778723,261
Events in quadrant D6,305,087603,076

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289412
B0169202
C0131912
D0232296

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6393114817.957141%
B63933545.537306%
C6394260.406631%
D639371111.121539%

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 7538 6393 1005 1005 13.33% 15.72%
B 7538 6393 244 244 3.24% 3.82%
C 7539 6395 6 6 0.08% 0.09%
D 7538 6394 709 709 9.41% 11.09%

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 15 223 3603344 25955.55 673 660 138.8
A 10 83 1906254 13728.86 673 660 138.8
A 10 248 33937 239.74 673 660 138.8
B 5 255 541264 3940.13 708 688 137.2
B 0 189 487711 3549.8 708 688 137.2
B 5 172 91961 665.27 708 688 137.2
C 12 2 38051 222.04 718 722 168.1
C 2 14 25486 147.3 718 722 168.1
C 14 254 12690 71.19 718 722 168.1
D 13 187 935379 5392.69 685 664 173.3
D 13 249 671239 3868.77 685 664 173.3
D 5 235 574551 3310.95 685 664 173.3

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