ASTROSAT CZTI

Data Quality Report

Orbit 41112

Creation date: 2024-06-27T22:24:37.687833
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_052T04_9000005602_41112cztM0_level2.fits modeM0/AS1A12_052T04_9000005602_41112cztM0_level2_quad_clean.evt
Size (bytes)324,017,28097,695,360
Size309.0 MB 93.2 MB
Events in quadrant A3,058,357667,268
Events in quadrant B2,736,892676,651
Events in quadrant C2,780,822644,818
Events in quadrant D3,006,385599,746

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121183
B0113792
C0112342
D0122242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5283100.189286%
B5283400.757146%
C5283270.511073%
D5283621.173576%

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 7346 5284 4 4 0.05% 0.08%
B 7346 5284 24 24 0.33% 0.45%
C 7346 5284 19 19 0.26% 0.36%
D 7346 5284 45 45 0.61% 0.85%

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 518302 4010.47 638 628 129.1
A 2 79 38200 291.07 638 628 129.1
A 14 235 12664 93.24 638 628 129.1
B 0 245 186496 1574.73 625 610 118.0
B 0 190 54336 455.14 625 610 118.0
B 0 186 26154 216.4 625 610 118.0
C 15 214 229358 1639.98 611 616 139.5
C 14 254 91980 655.04 611 616 139.5
C 0 10 58058 411.83 611 616 139.5
D 2 249 303531 2027.14 620 605 149.4
D 13 249 115238 767.11 620 605 149.4
D 9 49 75112 498.59 620 605 149.4

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