ASTROSAT CZTI

Data Quality Report

Orbit 39109

Creation date: 2024-06-27T22:00:32.097437
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_067T01_9000005432_39109cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39109cztM0_level2_quad_clean.evt
Size (bytes)1,384,983,360311,333,760
Size1.3 GB 296.9 MB
Events in quadrant A15,016,9892,094,804
Events in quadrant B8,776,4442,167,679
Events in quadrant C13,280,7141,986,891
Events in quadrant D12,726,8551,868,357

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0574695
B0388434
C0515224
D0506584

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189971670.879086%
B18997750.394799%
C189976213.268937%
D189973842.021372%

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 25086 19001 58 58 0.23% 0.31%
B 25086 19001 38 38 0.15% 0.20%
C 25086 19001 494 494 1.97% 2.60%
D 25086 19001 309 309 1.23% 1.63%

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 15 223 5127112 11980.35 2132 2091 427.8
A 10 83 1211286 2826.64 2132 2091 427.8
A 13 248 146343 337.21 2132 2091 427.8
B 5 184 163579 396.22 2125 2067 407.6
B 5 172 118482 285.59 2125 2067 407.6
B 0 230 111464 268.37 2125 2067 407.6
C 15 208 3850501 8060.86 2058 2071 477.4
C 15 214 785380 1640.71 2058 2071 477.4
C 9 187 575480 1201.05 2058 2071 477.4
D 12 235 2262882 4500.26 2062 2003 502.4
D 5 222 406367 804.88 2062 2003 502.4
D 2 249 376053 744.54 2062 2003 502.4

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