ASTROSAT CZTI

Data Quality Report

Orbit 11197

Creation date: 2024-06-27T16:09:36.771104
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/AS1A04_171T01_9000001634_11197cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11197cztM0_level2_quad_clean.evt
Size (bytes)1,444,993,920229,495,680
Size1.3 GB 218.9 MB
Events in quadrant A11,996,0861,429,635
Events in quadrant B11,137,3021,444,191
Events in quadrant C7,841,2251,462,154
Events in quadrant D11,572,5931,374,118

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03682
B03680
C03680
D03680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047820240
B045271152
C036570150
D046568185

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179798954.978030%
B179969245.134474%
C17988980.544808%
D179876333.519208%

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 20123 18021 529 529 2.63% 2.94%
B 20123 18034 506 506 2.51% 2.81%
C 20124 18023 0 0 0.00% 0.00%
D 20123 18023 448 448 2.23% 2.49%

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 8 5 3403245 8204.07 2032 1985 414.6
A 8 15 445511 1069.81 2032 1985 414.6
A 15 239 234368 560.52 2032 1985 414.6
B 4 239 2682678 6899.56 2044 1994 388.5
B 4 80 170685 434.18 2044 1994 388.5
B 11 51 129770 328.87 2044 1994 388.5
C 13 61 14687 27.06 2010 2014 468.3
C 12 4 8903 14.71 2010 2014 468.3
C 3 202 4948 6.27 2010 2014 468.3
D 1 52 958378 2011.81 1973 1915 475.4
D 5 222 805067 1689.33 1973 1915 475.4
D 8 195 593489 1244.31 1973 1915 475.4

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