ASTROSAT CZTI

Data Quality Report

Orbit 42881

Creation date: 2024-06-27T22:45:20.975328
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/AS1T05_143T01_9000005830_42881cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42881cztM0_level2_quad_clean.evt
Size (bytes)324,374,40083,966,400
Size309.3 MB 80.1 MB
Events in quadrant A2,845,374563,310
Events in quadrant B2,316,397583,269
Events in quadrant C2,537,632559,323
Events in quadrant D3,923,956491,179

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115472
B0103862
C0106642
D0150672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4925721.461929%
B4925220.446701%
C4925210.426396%
D49253416.923858%

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 7078 4926 41 41 0.58% 0.83%
B 7078 4926 18 18 0.25% 0.37%
C 7078 4926 18 18 0.25% 0.37%
D 7078 4926 346 346 4.89% 7.02%

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 546711 5113.21 523 512 106.8
A 15 237 185183 1728.79 523 512 106.8
A 13 248 51604 478.29 523 512 106.8
B 3 112 101931 1000.89 529 514 101.3
B 0 190 36538 355.52 529 514 101.3
B 5 255 32620 316.85 529 514 101.3
C 15 214 199221 1631.84 524 529 121.8
C 12 2 103399 844.86 524 529 121.8
C 14 254 83149 678.55 524 529 121.8
D 1 52 1188315 9795.73 501 488 121.3
D 13 249 271036 2231.15 501 488 121.3
D 12 6 158844 1305.92 501 488 121.3

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