ASTROSAT CZTI

Data Quality Report

Orbit 37190

Creation date: 2024-06-27T21:36:42.670894
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_079T01_9000005284_37190cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37190cztM0_level2_quad_clean.evt
Size (bytes)422,000,64088,470,720
Size402.5 MB 84.4 MB
Events in quadrant A2,708,830597,289
Events in quadrant B2,788,001593,071
Events in quadrant C3,539,006574,431
Events in quadrant D3,387,208546,070

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113103
B0115122
C0135572
D0134032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5254110.209364%
B5254771.465550%
C52541963.730491%
D52542464.682147%

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 7257 5255 1 1 0.01% 0.02%
B 7257 5255 54 54 0.74% 1.03%
C 7257 5255 208 208 2.87% 3.96%
D 7257 5255 219 219 3.02% 4.17%

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 261591 2062.82 628 616 126.5
A 13 254 8699 63.89 628 616 126.5
A 13 6 7401 53.63 628 616 126.5
B 5 172 162841 1373.65 614 598 118.1
B 0 229 132635 1117.91 614 598 118.1
B 0 190 40194 335.25 614 598 118.1
C 0 207 360790 2576.52 601 605 139.8
C 0 10 231232 1649.75 601 605 139.8
C 10 49 228282 1628.65 601 605 139.8
D 2 249 595937 4062.51 598 582 146.5
D 13 249 168675 1147.01 598 582 146.5
D 1 52 154491 1050.23 598 582 146.5

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