ASTROSAT CZTI

Data Quality Report

Orbit 11812

Creation date: 2024-06-27T16:18:37.239639
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/AS1A04_022T04_9000001746_11812cztM0_level2.evt modeM0/AS1A04_022T04_9000001746_11812cztM0_level2_quad_clean.evt
Size (bytes)472,481,28070,686,720
Size450.6 MB 67.4 MB
Events in quadrant A3,327,413425,969
Events in quadrant B4,236,661423,809
Events in quadrant C3,065,243431,674
Events in quadrant D3,238,484405,509

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139673
B0167012
C0134422
D0141562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6504721.107011%
B65042824.335793%
C6504280.430504%
D6504510.784133%

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 7765 6506 2 2 0.03% 0.03%
B 7765 6506 54 54 0.70% 0.83%
C 7765 6506 0 0 0.00% 0.00%
D 7765 6506 23 23 0.30% 0.35%

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 1 162 91523 563.45 797 780 161.1
A 1 178 49034 299.62 797 780 161.1
A 1 161 42581 259.55 797 780 161.1
B 4 239 353921 2364.98 797 778 149.3
B 15 185 325828 2176.84 797 778 149.3
B 15 204 208205 1389.13 797 778 149.3
C 1 16 8268 41.63 781 787 179.7
C 15 127 7313 36.31 781 787 179.7
C 13 61 5679 27.22 781 787 179.7
D 1 52 87767 475.52 766 747 183.0
D 8 195 64332 347.46 766 747 183.0
D 10 199 53176 286.49 766 747 183.0

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