ASTROSAT CZTI

Data Quality Report

Orbit 13179

Creation date: 2024-06-27T16:37:16.944973
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/AS1G08_034T01_9000001944_13179cztM0_level2.evt modeM0/AS1G08_034T01_9000001944_13179cztM0_level2_quad_clean.evt
Size (bytes)320,051,52035,352,000
Size305.2 MB 33.7 MB
Events in quadrant A2,835,820196,321
Events in quadrant B2,314,626206,644
Events in quadrant C1,741,122206,761
Events in quadrant D2,539,154188,609

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109351
B093791
C079461
D0101321

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A38503128.103896%
B38502326.025974%
C3850922.389610%
D38502095.428571%

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 4176 3852 143 143 3.42% 3.71%
B 4176 3852 69 69 1.65% 1.79%
C 4176 3852 0 0 0.00% 0.00%
D 4176 3852 90 90 2.16% 2.34%

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 12 189 425959 4471.89 455 443 95.2
A 0 23 274245 2877.48 455 443 95.2
A 12 173 176089 1845.92 455 443 95.2
B 4 239 377973 4235.77 451 439 89.1
B 3 64 43074 478.35 451 439 89.1
B 0 230 33010 365.43 451 439 89.1
C 15 208 5166 45.03 445 445 104.8
C 13 61 3358 27.78 445 445 104.8
C 3 202 1104 6.29 445 445 104.8
D 1 52 401646 3751.06 436 422 107.0
D 13 122 179981 1678.7 436 422 107.0
D 10 157 134641 1254.82 436 422 107.0

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