ASTROSAT CZTI

Data Quality Report

Orbit 22004

Creation date: 2024-06-27T18:35:11.995200
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/AS1A07_153T02_9000003250_22004cztM0_level2.evt modeM0/AS1A07_153T02_9000003250_22004cztM0_level2_quad_clean.evt
Size (bytes)592,637,760102,741,120
Size565.2 MB 98.0 MB
Events in quadrant A3,377,633686,064
Events in quadrant B3,589,649695,723
Events in quadrant C3,382,615653,708
Events in quadrant D7,131,315595,982

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143422
B0149702
C0143462
D0260286

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68781101.599302%
B68791712.485826%
C68791382.006106%
D6878107915.687700%

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 8968 6878 3 3 0.03% 0.04%
B 8969 6879 15 15 0.17% 0.22%
C 8969 6880 0 0 0.00% 0.00%
D 8968 6880 912 912 10.17% 13.26%

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 2 79 13719 74.28 872 855 173.2
A 13 254 11614 62.12 872 855 173.2
A 0 226 7501 38.37 872 855 173.2
B 0 190 79218 481.56 869 847 162.7
B 3 64 61998 375.75 869 847 162.7
B 0 230 19411 114.07 869 847 162.7
C 14 238 132360 687.65 828 834 191.3
C 0 10 18601 92.89 828 834 191.3
C 13 61 5772 25.81 828 834 191.3
D 7 238 3502379 18434.12 789 767 190.0
D 11 176 413383 2172.2 789 767 190.0
D 1 52 124400 650.86 789 767 190.0

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