ASTROSAT CZTI

Data Quality Report

Orbit 48075

Creation date: 2024-08-19T11:05:37.027772
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/AS1A13_073T04_9000006396_48075cztM0_level2.fits modeM0/AS1A13_073T04_9000006396_48075cztM0_level2_quad_clean.evt
Size (bytes)495,408,960102,994,560
Size472.5 MB 98.2 MB
Events in quadrant A8,123,482888,168
Events in quadrant B1,454,79899
Events in quadrant C3,958,084864,630
Events in quadrant D4,144,704785,638

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296120
B089590
C0180800
D0187160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8341901.079007%
B8342834199.988012%
C8342630.755215%
D83411471.762379%

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 8341 8341 10 10 0.12% 0.12%
B 8341 8341 0 0 0.00% 0.00%
C 8342 8342 69 69 0.83% 0.83%
D 8341 8341 133 133 1.59% 1.59%

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 4206583 21958.9 915 893 191.5
A 10 255 358246 1865.82 915 893 191.5
A 13 254 15555 76.55 915 893 191.5
B 2 177 1150000 80937.67 59 58 14.2
B 4 21 63904 4493.75 59 58 14.2
B 12 111 1721 117.05 59 58 14.2
C 15 208 347287 1623.7 901 905 213.3
C 14 254 74541 345.18 901 905 213.3
C 10 20 21671 97.34 901 905 213.3
D 2 249 495922 2219.23 890 860 223.1
D 11 224 87246 387.25 890 860 223.1
D 2 165 70801 313.53 890 860 223.1

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