ASTROSAT CZTI

Data Quality Report

Orbit 39478

Creation date: 2024-06-27T22:05:07.473588
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/AS1C07_001T02_9000005486_39478cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39478cztM0_level2_quad_clean.evt
Size (bytes)574,562,88076,896,000
Size547.9 MB 73.3 MB
Events in quadrant A6,856,622470,851
Events in quadrant B2,378,318596,472
Events in quadrant C3,978,548549,629
Events in quadrant D7,651,878346,964

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0239673
B0108682
C0153642
D0264062

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5198113721.873798%
B5198260.500192%
C51982184.193921%
D5198194537.418238%

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 7201 5199 1113 1113 15.46% 21.41%
B 7201 5199 12 12 0.17% 0.23%
C 7201 5199 220 220 3.06% 4.23%
D 7201 5199 1712 1712 23.77% 32.93%

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 15 222 4396440 42046.6 512 503 104.5
A 10 83 404357 3862.81 512 503 104.5
A 2 79 36032 339.83 512 503 104.5
B 8 3 82215 778.76 547 531 104.9
B 5 172 73777 698.31 547 531 104.9
B 15 85 26028 243.08 547 531 104.9
C 15 208 1559002 12699.06 524 528 122.7
C 15 214 219202 1781.84 524 528 122.7
C 9 187 143127 1161.95 524 528 122.7
D 2 249 4737297 43430.33 440 427 109.1
D 12 227 764793 7008.14 440 427 109.1
D 12 0 239554 2192.45 440 427 109.1

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