ASTROSAT CZTI

Data Quality Report

Orbit 27345

Creation date: 2024-06-27T19:39:07.245070
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/AS1T03_255T01_9000003922_27345cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27345cztM0_level2_quad_clean.evt
Size (bytes)581,555,52081,408,960
Size554.6 MB 77.6 MB
Events in quadrant A2,969,493549,451
Events in quadrant B3,279,916546,324
Events in quadrant C5,781,965483,467
Events in quadrant D5,184,727476,883

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124640
B0133880
C0210170
D0192270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5853821.400991%
B58531452.477362%
C5853111919.118401%
D585462010.591049%

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 6933 5854 1 1 0.01% 0.02%
B 6933 5854 46 46 0.66% 0.79%
C 6933 5854 741 741 10.69% 12.66%
D 6934 5854 534 534 7.70% 9.12%

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 13 248 27150 172.64 759 746 152.9
A 13 254 10232 62.02 759 746 152.9
A 0 226 6668 38.72 759 746 152.9
B 5 172 244726 1716.62 748 731 142.1
B 10 245 55288 383.83 748 731 142.1
B 0 190 24772 169.14 748 731 142.1
C 2 16 1842361 11919.66 658 663 154.5
C 8 208 1181903 7645.11 658 663 154.5
C 14 238 104269 670.55 658 663 154.5
D 1 52 1859746 10291.83 697 681 180.6
D 2 250 361686 1998.53 697 681 180.6
D 15 0 189178 1043.52 697 681 180.6

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