ASTROSAT CZTI

Data Quality Report

Orbit 40346

Creation date: 2024-06-27T22:15:09.088408
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_056T02_9000005538_40346cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40346cztM0_level2_quad_clean.evt
Size (bytes)400,271,04085,282,560
Size381.7 MB 81.3 MB
Events in quadrant A3,324,521619,353
Events in quadrant B2,338,459636,327
Events in quadrant C2,902,326587,609
Events in quadrant D5,869,604395,428

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132203
B0100722
C0115412
D0207572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4901651.326260%
B4901100.204040%
C49011032.101612%
D4901147730.136707%

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 7025 4902 47 47 0.67% 0.96%
B 7025 4902 5 5 0.07% 0.10%
C 7025 4902 108 108 1.54% 2.20%
D 7024 4901 1301 1301 18.52% 26.55%

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 6 10 506231 4396.65 564 557 115.0
A 10 83 456498 3964.24 564 557 115.0
A 13 248 74252 640.75 564 557 115.0
B 5 255 49701 454.92 566 553 108.0
B 4 170 32809 298.57 566 553 108.0
B 0 245 20216 182.0 566 553 108.0
C 14 254 500325 3980.47 543 548 125.6
C 15 214 226790 1801.9 543 548 125.6
C 0 10 42669 335.47 543 548 125.6
D 12 227 3427748 28578.97 482 469 119.9
D 2 250 224689 1869.7 482 469 119.9
D 12 128 131488 1092.52 482 469 119.9

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