ASTROSAT CZTI

Data Quality Report

Orbit 33878

Creation date: 2024-06-27T20:53:36.246501
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_33878cztM0_level2.evt modeM0/AS1A11_003T10_9000004838_33878cztM0_level2_quad_clean.evt
Size (bytes)65,177,28015,168,960
Size62.2 MB 14.5 MB
Events in quadrant A340,173102,371
Events in quadrant B402,553102,167
Events in quadrant C416,60998,217
Events in quadrant D753,81389,508

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016841
B018000
C017390
D028330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84200.000000%
B84260.712589%
C84200.000000%
D8429010.688836%

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 842 842 0 0 0.00% 0.00%
B 842 842 5 5 0.59% 0.59%
C 842 842 1 1 0.12% 0.12%
D 842 842 85 85 10.10% 10.10%

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 13 254 1502 71.21 87 85 19.9
A 3 137 877 39.8 87 85 19.9
A 0 226 712 31.51 87 85 19.9
B 5 172 24753 1321.64 88 85 18.7
B 4 232 11012 585.44 88 85 18.7
B 4 251 7400 391.92 88 85 18.7
C 15 214 34673 1573.66 88 88 22.0
C 3 233 14794 669.14 88 88 22.0
C 0 207 7621 342.76 88 88 22.0
D 2 250 222743 10044.26 82 80 22.2
D 13 249 146119 6587.78 82 80 22.2
D 8 195 38099 1715.03 82 80 22.2

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