ASTROSAT CZTI

Data Quality Report

Orbit 40934

Creation date: 2024-06-27T22:22:24.811115
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_052T04_9000005582_40934cztM0_level2.fits modeM0/AS1A12_052T04_9000005582_40934cztM0_level2_quad_clean.evt
Size (bytes)304,323,84089,314,560
Size290.2 MB 85.2 MB
Events in quadrant A2,749,010598,356
Events in quadrant B2,381,916604,091
Events in quadrant C2,544,925583,842
Events in quadrant D3,162,332534,922

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114952
B0111241
C0111671
D0133621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A547570.127854%
B5475160.292237%
C5475120.219178%
D54751021.863014%

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 7178 5476 1 1 0.01% 0.02%
B 7178 5476 4 4 0.06% 0.07%
C 7178 5476 9 9 0.13% 0.16%
D 7178 5476 89 89 1.24% 1.63%

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 450358 3692.3 593 580 121.8
A 13 254 8092 61.67 593 580 121.8
A 3 137 6569 49.16 593 580 121.8
B 5 255 80721 706.63 583 567 113.4
B 12 111 14322 121.26 583 567 113.4
B 11 111 13444 113.52 583 567 113.4
C 15 214 234642 1756.49 574 578 133.3
C 0 10 47331 350.85 574 578 133.3
C 12 249 15963 115.45 574 578 133.3
D 12 233 278049 1940.4 576 558 143.0
D 2 249 199187 1388.95 576 558 143.0
D 13 249 168556 1174.75 576 558 143.0

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