ASTROSAT CZTI

Data Quality Report

Orbit 40026

Creation date: 2024-06-27T22:11:25.534243
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_054T03_9000005516_40026cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40026cztM0_level2_quad_clean.evt
Size (bytes)299,505,60096,091,200
Size285.6 MB 91.6 MB
Events in quadrant A3,108,173647,210
Events in quadrant B2,463,545676,286
Events in quadrant C2,539,940640,927
Events in quadrant D2,563,805576,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125683
B0108212
C0107392
D0113362

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5275180.341232%
B5275150.284360%
C527550.094787%
D5275250.473934%

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 7368 5276 10 10 0.14% 0.19%
B 7368 5276 7 7 0.10% 0.13%
C 7368 5276 4 4 0.05% 0.08%
D 7368 5276 17 17 0.23% 0.32%

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 453073 3756.75 595 584 120.4
A 12 189 133771 1105.77 595 584 120.4
A 6 10 131455 1086.54 595 584 120.4
B 4 171 51931 445.37 601 587 115.3
B 15 85 24715 209.29 601 587 115.3
B 0 230 18454 154.98 601 587 115.3
C 15 214 223229 1650.07 585 589 134.9
C 0 10 20314 146.19 585 589 134.9
C 12 249 6010 40.18 585 589 134.9
D 2 31 124192 886.63 575 560 139.4
D 13 249 100370 715.79 575 560 139.4
D 2 250 66728 474.53 575 560 139.4

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