ASTROSAT CZTI

Data Quality Report

Orbit 23872

Creation date: 2024-06-27T18:59:36.836940
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/AS1A07_001T01_9000003538_23872cztM0_level2.evt modeM0/AS1A07_001T01_9000003538_23872cztM0_level2_quad_clean.evt
Size (bytes)475,390,080135,472,320
Size453.4 MB 129.2 MB
Events in quadrant A3,219,482920,655
Events in quadrant B3,356,367936,498
Events in quadrant C3,476,188884,904
Events in quadrant D3,866,519870,595

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143022
B0145462
C0147482
D0161672

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7043170.241374%
B7043360.511146%
C7043891.263666%
D7043420.596337%

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 7683 7044 0 0 0.00% 0.00%
B 7683 7044 3 3 0.04% 0.04%
C 7683 7044 9 9 0.12% 0.13%
D 7683 7044 45 45 0.59% 0.64%

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 13180 74.09 833 816 166.9
A 3 137 7133 37.86 833 816 166.9
A 0 226 7117 37.76 833 816 166.9
B 0 189 28719 176.54 836 816 158.1
B 4 216 19045 115.33 836 816 158.1
B 12 111 18830 113.97 836 816 158.1
C 7 247 150288 809.55 795 797 184.7
C 14 238 127823 687.9 795 797 184.7
C 0 10 96697 519.34 795 797 184.7
D 13 174 327052 1673.05 803 777 195.0
D 8 195 317600 1624.58 803 777 195.0
D 1 52 142210 725.23 803 777 195.0

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