ASTROSAT CZTI

Data Quality Report

Orbit 39258

Creation date: 2024-06-27T22:02:22.301055
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_093T02_9000005452_39258cztM0_level2.fits modeM0/AS1A12_093T02_9000005452_39258cztM0_level2_quad_clean.evt
Size (bytes)514,535,04084,104,640
Size490.7 MB 80.2 MB
Events in quadrant A2,801,153651,676
Events in quadrant B2,950,208659,708
Events in quadrant C2,572,478632,228
Events in quadrant D10,325,644245,737

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111563
B0119082
C0103992
D0342272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510190.176436%
B51011332.607332%
C510140.078416%
D5101318062.340718%

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 7194 5102 4 4 0.06% 0.08%
B 7194 5101 85 85 1.18% 1.67%
C 7194 5102 2 2 0.03% 0.04%
D 7194 5102 2749 2749 38.21% 53.88%

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 414038 3389.25 615 603 122.0
A 13 248 6487 48.23 615 603 122.0
A 3 137 6202 45.9 615 603 122.0
B 5 255 428984 3735.66 600 585 114.7
B 5 172 67982 587.7 600 585 114.7
B 5 184 54611 471.11 600 585 114.7
C 15 214 232229 1688.12 595 600 137.2
C 12 249 10607 72.93 595 600 137.2
C 0 10 9222 62.84 595 600 137.2
D 12 235 8397501 91857.05 374 365 91.4
D 12 227 160588 1752.69 374 365 91.4
D 2 249 132198 1442.13 374 365 91.4

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