ASTROSAT CZTI

Data Quality Report

Orbit 39563

Creation date: 2024-06-27T22:06:11.430037
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_018T01_9000005488_39563cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39563cztM0_level2_quad_clean.evt
Size (bytes)424,272,96086,754,240
Size404.6 MB 82.7 MB
Events in quadrant A4,928,436582,002
Events in quadrant B2,288,368617,804
Events in quadrant C4,562,199556,411
Events in quadrant D3,549,149529,871

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181213
B0101042
C0168312
D0140122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48562555.251236%
B4856430.885502%
C485651010.502471%
D48562725.601318%

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 6979 4857 210 210 3.01% 4.32%
B 6979 4857 29 29 0.42% 0.60%
C 6979 4857 475 475 6.81% 9.78%
D 6979 4857 227 227 3.25% 4.67%

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 2343602 21806.85 536 527 107.4
A 10 83 400816 3725.46 536 527 107.4
A 13 248 76326 705.46 536 527 107.4
B 5 172 112117 1083.97 545 531 102.9
B 5 255 12711 118.31 545 531 102.9
B 12 111 12513 116.39 545 531 102.9
C 9 187 1730549 14216.41 526 530 121.7
C 15 208 557250 4574.84 526 530 121.7
C 15 214 199027 1631.15 526 530 121.7
D 12 227 1072715 8379.54 527 513 128.0
D 7 38 108430 843.4 527 513 128.0
D 1 52 107489 836.05 527 513 128.0

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