ASTROSAT CZTI

Data Quality Report

Orbit 40639

Creation date: 2024-06-27T22:18:35.198575
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_029T01_9000005556_40639cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40639cztM0_level2_quad_clean.evt
Size (bytes)370,851,84094,262,400
Size353.7 MB 89.9 MB
Events in quadrant A3,046,557644,394
Events in quadrant B3,205,907659,100
Events in quadrant C3,213,786616,159
Events in quadrant D3,800,986521,541

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126883
B0134132
C0132612
D0152652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5910100.169205%
B5910741.252115%
C5910841.421320%
D591062210.524535%

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 8896 5912 3 3 0.03% 0.05%
B 8896 5912 43 43 0.48% 0.73%
C 8896 5912 79 79 0.89% 1.34%
D 8896 5912 74 74 0.83% 1.25%

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 496283 3696.01 651 638 134.1
A 2 79 34708 254.06 651 638 134.1
A 3 137 7576 51.74 651 638 134.1
B 0 190 314960 2483.9 645 627 126.5
B 0 229 232816 1834.79 645 627 126.5
B 0 230 61164 478.37 645 627 126.5
C 14 254 421229 2813.44 633 636 149.5
C 15 214 259614 1732.36 633 636 149.5
C 12 249 37527 246.77 633 636 149.5
D 12 227 498178 3328.9 600 584 149.5
D 6 239 311884 2082.6 600 584 149.5
D 13 171 201132 1341.67 600 584 149.5

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