ASTROSAT CZTI

Data Quality Report

Orbit 11476

Creation date: 2024-06-27T16:13:29.430062
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_021T04_9000001682_11476cztM0_level2.evt modeM0/AS1A04_021T04_9000001682_11476cztM0_level2_quad_clean.evt
Size (bytes)629,749,44088,174,080
Size600.6 MB 84.1 MB
Events in quadrant A6,283,218525,645
Events in quadrant B5,604,848556,730
Events in quadrant C3,157,567589,121
Events in quadrant D3,594,338553,075

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231183
B0208742
C0133902
D0147932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A638588213.813626%
B638589414.001566%
C6385731.143305%
D63851362.129992%

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 8721 6388 475 475 5.45% 7.44%
B 8721 6388 306 306 3.51% 4.79%
C 8721 6388 2 2 0.02% 0.03%
D 8721 6388 42 42 0.48% 0.66%

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 8 5 3049503 18998.77 794 778 160.5
A 1 162 50734 311.31 794 778 160.5
A 9 143 40679 248.65 794 778 160.5
B 4 81 1808408 12093.22 789 771 149.5
B 4 239 528604 3531.24 789 771 149.5
B 15 204 73407 485.94 789 771 149.5
C 14 234 24547 128.22 803 809 185.1
C 13 61 5873 27.35 803 809 185.1
C 12 4 3320 13.56 803 809 185.1
D 2 120 216520 1133.78 802 781 190.3
D 1 52 192250 1006.23 802 781 190.3
D 5 222 60291 312.74 802 781 190.3

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