ASTROSAT CZTI

Data Quality Report

Orbit 28142

Creation date: 2024-06-27T19:48:31.980951
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/AS1A10_045T04_9000004066_28142cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28142cztM0_level2_quad_clean.evt
Size (bytes)546,851,52094,201,920
Size521.5 MB 89.8 MB
Events in quadrant A3,340,844605,386
Events in quadrant B3,759,048611,630
Events in quadrant C3,613,409589,402
Events in quadrant D5,382,282567,496

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141000
B0153340
C0148110
D0205070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6868981.426907%
B68681762.562609%
C68681351.965638%
D68684005.824112%

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 7608 6868 0 0 0.00% 0.00%
B 7608 6869 38 38 0.50% 0.55%
C 7608 6868 6 6 0.08% 0.09%
D 7608 6868 292 292 3.84% 4.25%

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 13 254 12197 65.0 864 844 174.7
A 3 137 8318 42.79 864 844 174.7
A 0 13 7588 38.61 864 844 174.7
B 10 245 264978 1626.54 850 829 162.4
B 10 246 75363 458.95 850 829 162.4
B 15 32 51417 311.5 850 829 162.4
C 3 233 192576 988.53 826 830 194.0
C 14 238 133315 683.02 826 830 194.0
C 2 16 63134 321.2 826 830 194.0
D 1 52 1129769 5745.52 824 802 196.5
D 12 2 416359 2114.85 824 802 196.5
D 2 250 225973 1145.94 824 802 196.5

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