ASTROSAT CZTI

Data Quality Report

Orbit 26705

Creation date: 2024-06-27T19:31:56.350391
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_9000003848_26705cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26705cztM0_level2_quad_clean.evt
Size (bytes)428,567,04087,324,480
Size408.7 MB 83.3 MB
Events in quadrant A3,003,251579,969
Events in quadrant B2,987,659588,026
Events in quadrant C3,020,185552,452
Events in quadrant D3,594,182538,855

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120310
B0119330
C0121560
D0141120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5504330.599564%
B5505270.490463%
C5505971.762035%
D5505921.671208%

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 6809 5505 3 3 0.04% 0.05%
B 6810 5506 3 3 0.04% 0.05%
C 6810 5506 29 29 0.43% 0.53%
D 6810 5506 80 80 1.17% 1.45%

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 0 13 51068 333.02 757 746 151.1
A 6 16 20506 130.77 757 746 151.1
A 13 254 8722 52.78 757 746 151.1
B 0 189 52470 369.56 744 730 140.0
B 10 251 23068 159.55 744 730 140.0
B 12 111 15902 108.37 744 730 140.0
C 15 208 125527 748.01 711 719 166.9
C 14 238 116170 691.93 711 719 166.9
C 13 61 4825 24.61 711 719 166.9
D 7 80 552978 3142.82 724 705 175.7
D 1 52 152462 863.6 724 705 175.7
D 1 239 72192 406.81 724 705 175.7

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