ASTROSAT CZTI

Data Quality Report

Orbit 41026

Creation date: 2024-06-27T22:23:25.583712
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_029T02_9000005590_41026cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41026cztM0_level2_quad_clean.evt
Size (bytes)334,272,96090,714,240
Size318.8 MB 86.5 MB
Events in quadrant A2,841,446624,215
Events in quadrant B2,926,112636,014
Events in quadrant C3,015,033592,971
Events in quadrant D3,202,362543,863

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115553
B0119232
C0118592
D0128712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4991180.360649%
B4991761.522741%
C49911402.805049%
D49911993.987177%

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 7114 4992 5 5 0.07% 0.10%
B 7114 4992 41 41 0.58% 0.82%
C 7114 4992 119 119 1.67% 2.38%
D 7114 4992 173 173 2.43% 3.47%

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 486567 4048.64 591 581 120.0
A 12 189 32171 263.17 591 581 120.0
A 13 248 28912 236.02 591 581 120.0
B 0 190 529125 4734.21 585 569 111.6
B 15 32 47935 424.25 585 569 111.6
B 0 229 30457 267.7 585 569 111.6
C 14 254 369785 2781.37 575 581 132.7
C 15 214 214418 1610.92 575 581 132.7
C 0 10 138320 1037.65 575 581 132.7
D 13 249 665999 4836.64 569 555 137.6
D 2 249 114872 830.89 569 555 137.6
D 9 19 85850 619.95 569 555 137.6

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