ASTROSAT CZTI

Data Quality Report

Orbit 37303

Creation date: 2024-06-27T21:38:10.686549
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/AS1A10_094T23_9000005304_37303cztM0_level2.evt modeM0/AS1A10_094T23_9000005304_37303cztM0_level2_quad_clean.evt
Size (bytes)73,215,36018,187,200
Size69.8 MB 17.3 MB
Events in quadrant A483,205121,994
Events in quadrant B418,878126,510
Events in quadrant C519,407124,318
Events in quadrant D738,058113,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019192
B016721
C020051
D027081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80620.248139%
B80630.372208%
C806232.853598%
D80610713.275434%

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 806 806 1 1 0.12% 0.12%
B 806 806 1 1 0.12% 0.12%
C 806 806 17 17 2.11% 2.11%
D 806 806 106 106 13.15% 13.15%

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 10 83 84305 3817.68 102 100 22.1
A 10 67 2200 95.21 102 100 22.1
A 13 254 1296 54.22 102 100 22.1
B 0 213 12350 587.44 101 99 20.9
B 5 255 3855 180.1 101 99 20.9
B 12 18 2551 117.57 101 99 20.9
C 0 10 68234 2670.07 103 104 25.5
C 15 214 38713 1513.12 103 104 25.5
C 1 23 6503 250.78 103 104 25.5
D 12 227 201708 7796.23 99 96 25.9
D 2 249 104185 4025.07 99 96 25.9
D 10 253 27291 1051.62 99 96 25.9

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