ASTROSAT CZTI

Data Quality Report

Orbit 34556

Creation date: 2022-02-18T00:28:39.212945
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/AS1A05_097T01_9000004936_34556cztM0_level2.evt modeM0/AS1A05_097T01_9000004936_34556cztM0_level2_quad_clean.evt
Size (bytes)1,537,220,160168,710,400
Size1.4 GB 160.9 MB
Events in quadrant A8,333,8101,026,838
Events in quadrant B11,415,238993,495
Events in quadrant C8,986,9471,026,048
Events in quadrant D16,731,793947,755

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338553
B0435073
C0358363
D0618003

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16177330.203993%
B1617710616.558694%
C16177340.210175%
D161777904.883477%

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 22067 16180 14 14 0.06% 0.09%
B 22067 16180 752 752 3.41% 4.65%
C 22067 16180 22 22 0.10% 0.14%
D 22067 16180 618 618 2.80% 3.82%

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 9 143 136679 324.99 2092 2057 414.2
A 10 83 76746 180.31 2092 2057 414.2
A 4 48 27772 62.08 2092 2057 414.2
B 5 172 3061118 8118.04 2002 1957 376.8
B 0 245 156527 410.18 2002 1957 376.8
B 4 232 93946 244.11 2002 1957 376.8
C 15 214 667863 1439.65 2023 2041 462.5
C 14 67 299708 643.62 2023 2041 462.5
C 0 10 109312 231.94 2023 2041 462.5
D 8 195 5557604 11311.28 2010 1960 491.2
D 2 250 998892 2029.75 2010 1960 491.2
D 12 17 688768 1398.34 2010 1960 491.2

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