ASTROSAT CZTI

Data Quality Report

Orbit 20231229_A13_072T01_9000006008_level2

Creation date: 2024-01-05T14:38:37.719033
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/AS1A13_072T01_9000006008cztM0_level2.fits modeM0/AS1A13_072T01_9000006008cztM0_level2_quad_clean.evt
Size (bytes)2,566,319,0403,016,759,680
Size2.4 GB 2.8 GB
Events in quadrant A15,056,59818,534,116
Events in quadrant B14,866,05019,017,986
Events in quadrant C15,203,91418,086,063
Events in quadrant D12,409,59215,565,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09126370
B06374720
C06528720
D09285140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A059700
B059700
C059700
D059700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03750
B03760
C03770
D03770

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29447688142.993113%
B29447952141.770585%
C29448041911.423187%
D294478272209.243475%

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 377133 294358 0 0 0.00% 0.00%
B 377132 294456 0 0 0.00% 0.00%
C 377134 294436 0 0 0.00% 0.00%
D 377134 293882 0 0 0.00% 0.00%

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 7 110 12404 8.75 3927 3668 998.9
A 15 236 11808 8.15 3927 3668 998.9
A 0 29 11738 8.08 3927 3668 998.9
B 2 9 13743 13.04 3925 3734 767.5
B 2 8 11286 9.84 3925 3734 767.5
B 3 17 10421 8.71 3925 3734 767.5
C 3 202 11884 7.94 4019 3741 1025.4
C 1 81 11789 7.85 4019 3741 1025.4
C 1 80 11591 7.66 4019 3741 1025.4
D 8 176 12279 9.12 3561 3228 992.6
D 10 189 9172 5.99 3561 3228 992.6
D 15 47 9130 5.95 3561 3228 992.6

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