ASTROSAT CZTI

Data Quality Report

Orbit 42155

Creation date: 2024-06-27T22:37:35.209353
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/AS1C07_001T11_9000005760_42155cztM0_level2.fits modeM0/AS1C07_001T11_9000005760_42155cztM0_level2_quad_clean.evt
Size (bytes)278,784,00073,319,040
Size265.9 MB 69.9 MB
Events in quadrant A2,480,472487,009
Events in quadrant B2,192,613502,343
Events in quadrant C1,947,301500,308
Events in quadrant D3,370,294433,608

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100191
B095371
C084991
D0129481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4216641.518027%
B4216551.304554%
C421620.047438%
D42163097.329222%

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 6279 4217 43 43 0.68% 1.02%
B 6279 4217 34 34 0.54% 0.81%
C 6279 4217 0 0 0.00% 0.00%
D 6278 4216 283 283 4.51% 6.71%

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 402806 4392.84 449 440 91.6
A 15 222 153520 1671.26 449 440 91.6
A 12 189 113815 1237.78 449 440 91.6
B 4 171 227136 2623.86 454 442 86.4
B 15 33 43443 497.71 454 442 86.4
B 0 229 41067 470.21 454 442 86.4
C 15 214 169890 1610.79 453 455 105.2
C 12 249 4628 39.67 453 455 105.2
C 15 159 3532 29.25 453 455 105.2
D 1 52 426721 4021.3 434 422 106.0
D 13 249 296190 2789.99 434 422 106.0
D 12 6 213351 2008.57 434 422 106.0

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