ASTROSAT CZTI

Data Quality Report

Orbit 40566

Creation date: 2024-06-27T22:17:40.490033
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_054T02_9000005550_40566cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40566cztM0_level2_quad_clean.evt
Size (bytes)378,993,60082,601,280
Size361.4 MB 78.8 MB
Events in quadrant A3,023,179636,138
Events in quadrant B2,858,200642,569
Events in quadrant C2,719,912610,808
Events in quadrant D4,976,558209,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126553
B0122652
C0118432
D0188872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5745120.208877%
B5745200.348129%
C5745230.400348%
D5745396969.086162%

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 7208 5746 2 2 0.03% 0.03%
B 7208 5746 11 11 0.15% 0.19%
C 7208 5746 15 15 0.21% 0.26%
D 7208 5746 473 473 6.56% 8.23%

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 532586 4223.81 619 606 125.9
A 15 191 55362 434.75 619 606 125.9
A 12 189 18644 143.22 619 606 125.9
B 3 112 176768 1491.51 612 595 118.1
B 15 85 92980 782.15 612 595 118.1
B 7 202 69955 587.21 612 595 118.1
C 15 214 251623 1778.91 604 608 141.1
C 14 254 64485 452.69 604 608 141.1
C 0 10 38516 268.65 604 608 141.1
D 12 227 1818929 18262.23 400 389 99.6
D 12 191 505302 5070.46 400 389 99.6
D 12 0 437225 4386.82 400 389 99.6

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