ASTROSAT CZTI

Data Quality Report

Orbit 23248

Creation date: 2024-06-27T18:51:49.215821
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/AS1A08_004T03_9000003438_23248cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23248cztM0_level2_quad_clean.evt
Size (bytes)485,196,48087,514,560
Size462.7 MB 83.5 MB
Events in quadrant A3,053,260568,180
Events in quadrant B3,108,295581,217
Events in quadrant C3,352,345544,426
Events in quadrant D4,761,814525,663

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181
B0192
C0191
D0191

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013277425
B013369429
C013961408
D019213931

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01308
B01304
C01308
D01306

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171320.518555%
B6168550.891699%
C61771332.153149%
D61581812.939266%

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 7521 6219 0 0 0.00% 0.00%
B 7521 6203 6 6 0.08% 0.10%
C 7521 6218 23 23 0.31% 0.37%
D 7520 6188 161 161 2.14% 2.60%

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 6 16 50983 322.51 778 762 155.7
A 13 254 9949 59.0 778 762 155.7
A 0 226 6723 38.28 778 762 155.7
B 3 64 22927 150.06 781 764 147.7
B 12 111 17250 111.62 781 764 147.7
B 11 111 15379 98.95 781 764 147.7
C 0 239 126420 710.91 751 756 176.8
C 14 238 118652 666.96 751 756 176.8
C 0 10 80959 453.72 751 756 176.8
D 1 52 1294882 7074.07 753 732 182.9
D 2 152 500371 2731.12 753 732 182.9
D 13 104 30737 164.01 753 732 182.9

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