ASTROSAT CZTI

Data Quality Report

Orbit 33516

Creation date: 2024-06-27T20:49:41.506680
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/AS1A11_060T01_9000004804_33516cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33516cztM0_level2_quad_clean.evt
Size (bytes)634,798,08095,682,240
Size605.4 MB 91.2 MB
Events in quadrant A3,119,785628,731
Events in quadrant B5,423,793599,526
Events in quadrant C4,534,800613,221
Events in quadrant D5,686,302581,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136673
B0205342
C0179982
D0214422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6809120.176237%
B680969610.221765%
C68091932.834484%
D68093875.683654%

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 9464 6811 0 0 0.00% 0.00%
B 9464 6811 466 466 4.92% 6.84%
C 9464 6811 149 149 1.57% 2.19%
D 9464 6811 328 328 3.47% 4.82%

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 13 254 11660 66.93 805 788 162.4
A 3 137 8207 45.67 805 788 162.4
A 0 226 6598 35.77 805 788 162.4
B 5 255 1316356 8812.24 770 749 149.3
B 5 172 1006831 6738.97 770 749 149.3
B 4 251 20704 133.66 770 749 149.3
C 3 233 764975 4236.88 776 783 180.4
C 15 214 312490 1728.19 776 783 180.4
C 0 10 207180 1144.32 776 783 180.4
D 8 195 1178852 6301.91 765 744 186.9
D 2 250 612227 3270.93 765 744 186.9
D 13 249 475035 2537.07 765 744 186.9

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