ASTROSAT CZTI

Data Quality Report

Orbit 33884

Creation date: 2024-06-27T20:53:39.260596
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/AS1A11_003T10_9000004838_33884cztM0_level2.evt modeM0/AS1A11_003T10_9000004838_33884cztM0_level2_quad_clean.evt
Size (bytes)444,479,04048,395,520
Size423.9 MB 46.2 MB
Events in quadrant A5,683,657270,199
Events in quadrant B2,449,295314,823
Events in quadrant C2,296,905310,075
Events in quadrant D2,772,271299,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195341
B096351
C090461
D0108611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113976863969156046
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3819113029.588898%
B38191594.163394%
C3819872.278083%
D38191062.775596%

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 3819 3819 1015 1015 26.58% 26.58%
B 3819 3819 100 100 2.62% 2.62%
C 3819 3819 65 65 1.70% 1.70%
D 3819 3819 99 99 2.59% 2.59%

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 15 169 4044568 48099.04 420 413 84.1
A 13 6 13830 159.57 420 413 84.1
A 13 254 6063 67.2 420 413 84.1
B 5 172 294013 3415.22 455 443 86.0
B 4 251 167785 1946.76 455 443 86.0
B 5 255 116280 1347.58 455 443 86.0
C 15 214 164369 1600.48 448 451 102.4
C 0 10 144073 1402.31 448 451 102.4
C 0 207 78756 764.56 448 451 102.4
D 12 235 295929 2680.11 451 438 110.3
D 8 195 260436 2358.19 451 438 110.3
D 2 249 112568 1017.02 451 438 110.3

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