ASTROSAT CZTI

Data Quality Report

Orbit 09279

Creation date: 2024-06-27T15:43:50.343374
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_077T01_9000001306_09279cztM0_level2.evt modeM0/AS1G07_077T01_9000001306_09279cztM0_level2_quad_clean.evt
Size (bytes)840,697,920153,944,640
Size801.8 MB 146.8 MB
Events in quadrant A7,737,506944,660
Events in quadrant B5,746,256985,970
Events in quadrant C5,382,122984,527
Events in quadrant D5,790,104925,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393338455
B0331238058
C0317257500
D0344968705

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031581
B031678
C031769
D031660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394
B03911
C0409
D04010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118151321.117224%
B11879800.673457%
C11895190.159731%
D118401070.903716%

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 19438 12687 18 18 0.09% 0.14%
B 19438 12761 7 7 0.04% 0.05%
C 19438 12772 0 0 0.00% 0.00%
D 19438 12661 46 46 0.24% 0.36%

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 8 5 2160686 7850.62 1374 1347 275.1
A 13 251 134578 484.38 1374 1347 275.1
A 1 162 81785 292.45 1374 1347 275.1
B 0 214 80504 302.71 1409 1373 261.4
B 8 234 51882 193.22 1409 1373 261.4
B 0 245 41793 154.62 1409 1373 261.4
C 14 67 14308 41.21 1372 1380 313.7
C 13 61 10348 28.59 1372 1380 313.7
C 10 22 7820 20.53 1372 1380 313.7
D 12 233 380117 1150.91 1334 1299 329.1
D 2 136 105874 317.72 1334 1299 329.1
D 2 152 88269 264.23 1334 1299 329.1

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