ASTROSAT CZTI

Data Quality Report

Orbit 48229

Creation date: 2024-08-28T22:01:55.953385
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/AS1C09_008T01_9000006420_48229cztM0_level2.fits modeM0/AS1C09_008T01_9000006420_48229cztM0_level2_quad_clean.evt
Size (bytes)291,574,08065,721,600
Size278.1 MB 62.7 MB
Events in quadrant A4,123,785440,808
Events in quadrant B2,092,506449,259
Events in quadrant C1,935,933428,352
Events in quadrant D2,341,469399,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151080
B087510
C086060
D095400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3842641.665799%
B3842160.416450%
C3843741.925579%
D3843170.442363%

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 3842 3842 9 9 0.23% 0.23%
B 3842 3842 7 7 0.18% 0.18%
C 3843 3843 60 60 1.56% 1.56%
D 3843 3843 15 15 0.39% 0.39%

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 2414041 27325.57 426 417 88.3
A 13 248 45378 509.02 426 417 88.3
A 13 254 8253 88.71 426 417 88.3
B 4 21 167145 1991.87 426 414 83.7
B 0 200 164644 1961.99 426 414 83.7
B 5 255 37605 444.31 426 414 83.7
C 12 2 308891 3179.08 411 413 97.0
C 12 249 9454 93.17 411 413 97.0
C 0 207 8847 86.92 411 413 97.0
D 2 165 579766 5499.0 415 402 105.4
D 2 249 54228 510.89 415 402 105.4
D 12 233 24740 231.0 415 402 105.4

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