ASTROSAT CZTI

Data Quality Report

Orbit 12683

Creation date: 2024-06-27T16:31:00.539496
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_174T01_9000001876_12683cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12683cztM0_level2_quad_clean.evt
Size (bytes)566,015,04099,999,360
Size539.8 MB 95.4 MB
Events in quadrant A3,487,800661,754
Events in quadrant B5,766,752581,485
Events in quadrant C3,412,602660,374
Events in quadrant D3,985,824622,814

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151503
B0219682
C0149582
D0169412

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7203390.541441%
B720397313.508260%
C7203150.208247%
D72031972.734972%

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 7644 7204 3 3 0.04% 0.04%
B 7644 7204 811 811 10.61% 11.26%
C 7644 7204 12 12 0.16% 0.17%
D 7644 7204 169 169 2.21% 2.35%

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 12 189 95336 527.47 868 849 179.1
A 9 143 49047 269.07 868 849 179.1
A 0 226 7698 38.23 868 849 179.1
B 4 239 2375928 15389.99 806 787 154.3
B 3 64 81007 519.79 806 787 154.3
B 11 51 43055 273.88 806 787 154.3
C 15 208 107999 543.0 846 853 197.3
C 13 61 6082 26.5 846 853 197.3
C 14 234 5243 22.25 846 853 197.3
D 1 52 483652 2405.61 827 810 200.7
D 13 104 244851 1215.86 827 810 200.7
D 8 195 39685 193.68 827 810 200.7

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