ASTROSAT CZTI

Data Quality Report

Orbit 37315

Creation date: 2024-06-27T21:38:20.347932
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/AS1A11_030T02_9000005310_37315cztM0_level2.evt modeM0/AS1A11_030T02_9000005310_37315cztM0_level2_quad_clean.evt
Size (bytes)439,914,24081,806,400
Size419.5 MB 78.0 MB
Events in quadrant A2,923,752533,755
Events in quadrant B2,867,390548,738
Events in quadrant C2,886,859538,290
Events in quadrant D4,279,220479,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120973
B0120502
C0118082
D0163982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5381731.356625%
B5381851.579632%
C5381601.115034%
D53814788.883107%

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 7174 5382 48 48 0.67% 0.89%
B 7174 5382 42 42 0.59% 0.78%
C 7174 5382 41 41 0.57% 0.76%
D 7174 5382 434 434 6.05% 8.06%

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 270946 2167.37 620 609 124.7
A 15 237 102102 813.7 620 609 124.7
A 9 143 71925 571.76 620 609 124.7
B 5 172 242974 2038.16 621 606 118.9
B 0 213 48642 403.95 621 606 118.9
B 5 200 31168 257.01 621 606 118.9
C 15 214 227748 1573.19 615 619 144.4
C 0 10 116550 802.98 615 619 144.4
C 14 254 111831 770.3 615 619 144.4
D 12 227 641614 4479.79 590 575 143.1
D 2 249 550731 3844.67 590 575 143.1
D 13 249 313975 2190.14 590 575 143.1

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