ASTROSAT CZTI

Data Quality Report

Orbit 46581

Creation date: 2024-06-27T23:25:02.686891
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_001T10_9000006232_46581cztM0_level2.fits modeM0/AS1C07_001T10_9000006232_46581cztM0_level2_quad_clean.evt
Size (bytes)731,738,880102,280,320
Size697.8 MB 97.5 MB
Events in quadrant A6,421,643768,481
Events in quadrant B4,109,453763,209
Events in quadrant C3,301,467759,579
Events in quadrant D12,688,533298,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233530
B0172800
C0152340
D0427750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7282751.029937%
B72832924.009337%
C7283380.521763%
D7283453262.227104%

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 7282 7282 8 8 0.11% 0.11%
B 7283 7283 212 212 2.91% 2.91%
C 7283 7283 26 26 0.36% 0.36%
D 7283 7283 3235 3235 44.42% 44.42%

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 3247336 19601.25 791 771 165.6
A 7 3 73726 440.47 791 771 165.6
A 0 243 15631 89.72 791 771 165.6
B 15 201 656533 4245.89 778 752 154.5
B 2 2 87444 561.29 778 752 154.5
B 5 255 76577 490.93 778 752 154.5
C 14 254 194289 1074.81 774 778 180.0
C 0 207 35075 190.49 774 778 180.0
C 3 233 26626 143.57 774 778 180.0
D 13 138 5528792 41335.43 522 505 133.7
D 1 52 4122619 30821.37 522 505 133.7
D 2 120 300635 2244.1 522 505 133.7

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