ASTROSAT CZTI

Data Quality Report

Orbit 04761

Creation date: 2024-06-27T14:46:28.407772
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/AS1G05_195T01_9000000598_04761cztM0_level2.evt modeM0/AS1G05_195T01_9000000598_04761cztM0_level2_quad_clean.evt
Size (bytes)42,186,24010,647,360
Size40.2 MB 10.2 MB
Events in quadrant A303,92470,593
Events in quadrant B345,28770,734
Events in quadrant C291,82969,169
Events in quadrant D297,17066,660

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012261
B014321
C011721
D012041

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53020.377358%
B53050.943396%
C53091.698113%
D53010.188679%

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 530 530 0 0 0.00% 0.00%
B 530 530 0 0 0.00% 0.00%
C 530 530 0 0 0.00% 0.00%
D 530 530 0 0 0.00% 0.00%

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 7 16 1626 85.53 78 76 18.1
A 15 174 901 45.53 78 76 18.1
A 12 194 872 43.92 78 76 18.1
B 15 204 13510 776.91 77 75 17.3
B 15 54 10510 603.43 77 75 17.3
B 14 167 7708 441.4 77 75 17.3
C 14 48 6004 315.4 72 72 18.8
C 1 16 3211 166.9 72 72 18.8
C 7 159 817 39.61 72 72 18.8
D 2 234 6705 331.83 74 71 20.0
D 13 235 4535 223.29 74 71 20.0
D 11 132 3027 147.86 74 71 20.0

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