ASTROSAT CZTI

Data Quality Report

Orbit 20180228_C03_023T01_9000001930_level2

Creation date: 2019-11-20T13:50:52.231418
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1C03_023T01_9000001930cztM0_level2_bc.evt modeM0/AS1C03_023T01_9000001930cztM0_level2_quad_clean.evt
Size (bytes)3,171,288,960882,959,040
Size3.0 GB 842.1 MB
Events in quadrant A17,417,8075,534,738
Events in quadrant B28,925,7425,376,425
Events in quadrant C14,232,6195,656,733
Events in quadrant D30,593,0285,271,568

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01591010
B02324870
C01468090
D02072210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01150
B01150
C01150
D01150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014560
B014560
C014560
D014560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7148816722.338854%
B714891267617.731399%
C714894980.696611%
D7148944146.174376%

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 85061 71492 128 128 0.15% 0.18%
B 85061 71415 549 549 0.65% 0.77%
C 85061 71493 3 3 0.00% 0.00%
D 85061 71487 635 635 0.75% 0.89%

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 1460562 1865.17 3588 3512 781.2
A 12 189 1086366 1386.17 3588 3512 781.2
A 15 239 562105 715.06 3588 3512 781.2
B 0 85 11200594 18023.69 3283 3189 621.3
B 4 239 3208696 5159.68 3283 3189 621.3
B 3 64 910501 1460.44 3283 3189 621.3
C 14 234 61074 73.32 3592 3544 784.7
C 0 207 29087 32.55 3592 3544 784.7
C 8 128 28653 32.0 3592 3544 784.7
D 1 52 6246000 7731.0 3514 3388 807.5
D 13 122 4898513 6062.24 3514 3388 807.5
D 10 157 4051499 5013.28 3514 3388 807.5

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