ASTROSAT CZTI

Data Quality Report

Orbit 38772

Creation date: 2024-06-27T21:56:14.056637
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_051T01_9000005394_38772cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38772cztM0_level2_quad_clean.evt
Size (bytes)304,992,00089,061,120
Size290.9 MB 84.9 MB
Events in quadrant A2,741,667594,074
Events in quadrant B2,745,946603,345
Events in quadrant C2,592,346585,190
Events in quadrant D2,789,724536,839

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114801
B0118931
C0110681
D0121381

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5386340.631266%
B53861252.320832%
C5386140.259933%
D5386911.689566%

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 6698 5387 22 22 0.33% 0.41%
B 6698 5387 89 89 1.33% 1.65%
C 6698 5387 4 4 0.06% 0.07%
D 6698 5387 66 66 0.99% 1.23%

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 308360 2534.79 594 583 121.4
A 15 174 121194 993.33 594 583 121.4
A 13 248 16422 130.45 594 583 121.4
B 4 171 403169 3482.43 589 573 115.6
B 12 111 14978 124.6 589 573 115.6
B 11 111 13675 113.33 589 573 115.6
C 15 214 232787 1703.67 582 584 136.3
C 14 254 31332 225.6 582 584 136.3
C 0 10 25750 184.64 582 584 136.3
D 10 118 270934 1918.24 575 560 140.9
D 2 250 133406 942.51 575 560 140.9
D 12 227 93038 656.11 575 560 140.9

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