ASTROSAT CZTI

Data Quality Report

Orbit 45852

Creation date: 2024-06-27T23:16:54.877715
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/AS1T05_186T01_9000006130_45852cztM0_level2.fits modeM0/AS1T05_186T01_9000006130_45852cztM0_level2_quad_clean.evt
Size (bytes)671,071,680105,819,840
Size640.0 MB 100.9 MB
Events in quadrant A6,075,897750,012
Events in quadrant B9,905,208583,557
Events in quadrant C3,127,189761,465
Events in quadrant D5,227,807653,869

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219402
B0339854
C0136682
D0198442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65212964.539181%
B6520236236.226994%
C6520921.411043%
D65204967.607362%

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 7666 6524 6 6 0.08% 0.09%
B 7665 6522 1573 1573 20.52% 24.12%
C 7665 6523 8 8 0.10% 0.12%
D 7665 6523 310 310 4.04% 4.75%

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 2992617 18376.7 790 775 162.8
A 14 235 13329 77.11 790 775 162.8
A 13 254 8734 48.89 790 775 162.8
B 3 112 6336549 44792.13 719 699 141.5
B 0 189 271194 1912.3 719 699 141.5
B 0 171 147381 1036.99 719 699 141.5
C 12 249 48004 258.62 782 787 182.6
C 12 2 12670 65.09 782 787 182.6
C 3 233 12482 64.06 782 787 182.6
D 1 52 726811 3828.38 756 732 189.7
D 12 2 489208 2575.57 756 732 189.7
D 13 249 480017 2527.11 756 732 189.7

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