ASTROSAT CZTI

Data Quality Report

Orbit 08739

Creation date: 2024-06-27T15:36:32.578574
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/AS1G07_005T02_9000001214_08739cztM0_level2.evt modeM0/AS1G07_005T02_9000001214_08739cztM0_level2_quad_clean.evt
Size (bytes)206,714,88055,722,240
Size197.1 MB 53.1 MB
Events in quadrant A1,399,273376,235
Events in quadrant B1,520,997375,487
Events in quadrant C1,471,634364,466
Events in quadrant D1,660,679355,424

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061990
B065020
C065000
D070020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A302760.198216%
B3027240.792864%
C3027270.891972%
D302790.297324%

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 3027 3027 1 1 0.03% 0.03%
B 3027 3027 20 20 0.66% 0.66%
C 3027 3027 24 24 0.79% 0.79%
D 3027 3027 7 7 0.23% 0.23%

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 13 251 44411 608.51 348 340 72.4
A 5 16 9191 122.21 348 340 72.4
A 15 174 4178 52.99 348 340 72.4
B 10 16 87787 1312.89 344 336 66.6
B 0 214 32881 488.6 344 336 66.6
B 4 173 25009 370.41 344 336 66.6
C 4 254 155757 1998.34 334 335 77.8
C 1 16 12251 153.21 334 335 77.8
C 13 61 2558 28.58 334 335 77.8
D 7 71 305282 3419.17 336 328 89.2
D 2 152 16338 179.51 336 328 89.2
D 11 129 15673 172.05 336 328 89.2

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