ASTROSAT CZTI

Data Quality Report

Orbit 22865

Creation date: 2024-06-27T18:46:45.535511
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/AS1A07_054T01_9000003378_22865cztM0_level2.evt modeM0/AS1A07_054T01_9000003378_22865cztM0_level2_quad_clean.evt
Size (bytes)497,597,760123,655,680
Size474.5 MB 117.9 MB
Events in quadrant A2,987,169844,161
Events in quadrant B3,076,515851,692
Events in quadrant C3,066,589817,669
Events in quadrant D5,499,603779,451

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132632
B0135572
C0135022
D0208872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6489130.200339%
B6489280.431499%
C6489580.893820%
D64883865.949445%

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 7509 6490 0 0 0.00% 0.00%
B 7509 6490 0 0 0.00% 0.00%
C 7509 6490 2 2 0.03% 0.03%
D 7508 6489 314 314 4.18% 4.84%

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 11 47 13349 80.61 769 752 156.3
A 13 254 10418 61.86 769 752 156.3
A 6 16 8514 49.67 769 752 156.3
B 0 190 55380 376.5 767 749 145.1
B 12 111 17495 115.41 767 749 145.1
B 11 111 15304 100.31 767 749 145.1
C 14 238 116729 672.08 741 744 172.6
C 10 22 41887 238.41 741 744 172.6
C 0 10 10070 54.04 741 744 172.6
D 7 238 1753508 9775.93 735 712 179.3
D 1 52 446435 2485.95 735 712 179.3
D 2 152 206639 1148.52 735 712 179.3

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