ASTROSAT CZTI

Data Quality Report

Orbit 19858

Creation date: 2024-06-27T18:07:58.078925
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/AS1T03_118T01_9000002962_19858cztM0_level2.evt modeM0/AS1T03_118T01_9000002962_19858cztM0_level2_quad_clean.evt
Size (bytes)598,507,20095,224,320
Size570.8 MB 90.8 MB
Events in quadrant A6,803,844596,787
Events in quadrant B3,440,466643,698
Events in quadrant C3,705,514612,430
Events in quadrant D3,753,798595,575

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245232
B0141912
C0149532
D0151952

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6228108817.469493%
B62291372.199390%
C62291562.504415%
D62291322.119120%

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 8763 6228 774 774 8.83% 12.43%
B 8764 6229 6 6 0.07% 0.10%
C 8764 6229 5 5 0.06% 0.08%
D 8764 6229 43 43 0.49% 0.69%

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 14 238 3681992 22792.84 805 789 161.5
A 14 254 29767 179.42 805 789 161.5
A 0 226 6737 36.83 805 789 161.5
B 4 216 23687 141.79 860 842 161.1
B 12 111 18830 111.64 860 842 161.1
B 11 111 16568 97.6 860 842 161.1
C 9 221 305376 1570.11 836 845 194.0
C 14 238 131048 671.3 836 845 194.0
C 3 233 11017 52.45 836 845 194.0
D 1 52 384536 1893.83 840 818 202.6
D 2 184 130893 641.98 840 818 202.6
D 13 138 56308 273.87 840 818 202.6

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