ASTROSAT CZTI

Data Quality Report

Orbit 41440

Creation date: 2024-06-27T22:29:02.256935
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/AS1A12_035T01_9000005666_41440cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41440cztM0_level2_quad_clean.evt
Size (bytes)243,063,36068,584,320
Size231.8 MB 65.4 MB
Events in quadrant A2,490,468459,638
Events in quadrant B1,936,650468,118
Events in quadrant C2,241,638434,055
Events in quadrant D1,995,909415,628

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100101
B086221
C093381
D090271

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A425550.117509%
B425540.094007%
C42551172.749706%
D4255240.564042%

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 4255 4255 5 5 0.12% 0.12%
B 4255 4255 1 1 0.02% 0.02%
C 4255 4255 115 115 2.70% 2.70%
D 4255 4255 18 18 0.42% 0.42%

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 373578 3813.94 468 457 97.8
A 2 79 285506 2913.69 468 457 97.8
A 13 248 10174 99.32 468 457 97.8
B 0 190 76437 825.01 465 451 92.1
B 0 155 22774 242.37 465 451 92.1
B 12 111 11399 118.87 465 451 92.1
C 0 10 311650 2956.2 448 449 105.3
C 15 214 173283 1641.81 448 449 105.3
C 9 54 8078 72.47 448 449 105.3
D 13 249 136985 1204.69 457 443 113.3
D 5 222 29163 253.39 457 443 113.3
D 2 249 26468 229.61 457 443 113.3

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