ASTROSAT CZTI

Data Quality Report

Orbit 26769

Creation date: 2024-06-27T19:32:45.665844
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/AS1A09_145T01_9000003854_26769cztM0_level2.fits modeM0/AS1A09_145T01_9000003854_26769cztM0_level2_quad_clean.evt
Size (bytes)424,169,28061,516,800
Size404.5 MB 58.7 MB
Events in quadrant A2,379,919484,472
Events in quadrant B3,781,455423,562
Events in quadrant C1,955,374468,786
Events in quadrant D7,282,562212,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A095421
B0136841
C081271
D0243011

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38741213.123387%
B387570218.116129%
C3875380.980645%
D3875219256.567742%

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 3874 3874 68 68 1.76% 1.76%
B 3875 3875 616 616 15.90% 15.90%
C 3875 3875 5 5 0.13% 0.13%
D 3875 3875 1898 1898 48.98% 48.98%

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 12 96 430557 4420.41 476 467 97.3
A 0 13 111719 1143.43 476 467 97.3
A 13 254 6848 65.58 476 467 97.3
B 0 189 2070226 24335.16 434 424 85.1
B 12 111 9883 111.21 434 424 85.1
B 11 111 8755 97.95 434 424 85.1
C 14 238 74441 678.16 459 462 109.1
C 15 208 32600 294.61 459 462 109.1
C 10 22 26578 239.4 459 462 109.1
D 7 80 5682383 73612.17 309 302 77.2
D 2 250 215149 2783.37 309 302 77.2
D 1 52 160862 2080.08 309 302 77.2

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