ASTROSAT CZTI

Data Quality Report

Orbit 08839

Creation date: 2024-06-27T15:37:53.489892
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/AS1G07_087T01_9000001228_08839cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08839cztM0_level2_quad_clean.evt
Size (bytes)522,961,92067,812,480
Size498.7 MB 64.7 MB
Events in quadrant A3,351,499407,583
Events in quadrant B4,461,484388,492
Events in quadrant C3,087,716401,656
Events in quadrant D4,482,982388,642

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01427017
B0175438
C0137688
D01760221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6683801.197067%
B66864646.939874%
C6686681.017051%
D66842944.398564%

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 7734 6688 1 1 0.01% 0.01%
B 7733 6688 312 312 4.03% 4.67%
C 7734 6689 0 0 0.00% 0.00%
D 7734 6688 215 215 2.78% 3.21%

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 126471 766.1 810 793 164.0
A 15 174 58531 351.96 810 793 164.0
A 13 248 15162 87.59 810 793 164.0
B 4 48 1216755 8045.32 797 779 151.1
B 4 80 71952 470.91 797 779 151.1
B 0 214 31140 200.88 797 779 151.1
C 13 61 6015 28.4 789 793 183.9
C 12 4 5056 23.18 789 793 183.9
C 1 16 4401 19.62 789 793 183.9
D 1 52 705149 3797.58 774 755 185.5
D 2 14 531768 2862.84 774 755 185.5
D 8 195 206423 1108.81 774 755 185.5

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