ASTROSAT CZTI

Data Quality Report

Orbit 20764

Creation date: 2024-06-27T18:19:20.039859
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/AS1A05_013T01_9000003070_20764cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20764cztM0_level2_quad_clean.evt
Size (bytes)1,008,414,720157,780,800
Size961.7 MB 150.5 MB
Events in quadrant A5,985,5861,018,205
Events in quadrant B6,359,9151,012,696
Events in quadrant C6,091,175977,899
Events in quadrant D11,242,630889,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02600
B02600
C02600
D02600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263664
B0273564
C0266154
D0423044

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127351260.989399%
B127351311.028661%
C127351841.444837%
D1273512199.572046%

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 14005 12737 27 27 0.19% 0.21%
B 14005 12737 11 11 0.08% 0.09%
C 14005 12737 29 29 0.21% 0.23%
D 14005 12737 1063 1063 7.59% 8.35%

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 5 16 156026 508.76 1517 1483 303.8
A 0 226 12995 37.9 1517 1483 303.8
A 3 137 12490 36.23 1517 1483 303.8
B 7 220 225147 780.69 1506 1470 286.5
B 0 230 83316 285.66 1506 1470 286.5
B 0 229 45353 153.16 1506 1470 286.5
C 9 54 250504 742.91 1437 1446 335.2
C 14 238 225687 668.88 1437 1446 335.2
C 13 61 10121 25.88 1437 1446 335.2
D 5 222 2436465 7231.34 1389 1346 336.7
D 1 20 2380729 7065.83 1389 1346 336.7
D 1 52 863746 2560.99 1389 1346 336.7

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