ASTROSAT CZTI

Data Quality Report

Orbit 06556

Creation date: 2024-06-27T15:08:46.283278
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/AS1G05_246T04_9000000882_06556cztM0_level2.evt modeM0/AS1G05_246T04_9000000882_06556cztM0_level2_quad_clean.evt
Size (bytes)446,863,680109,391,040
Size426.2 MB 104.3 MB
Events in quadrant A3,112,444717,295
Events in quadrant B3,381,636738,378
Events in quadrant C3,043,022725,327
Events in quadrant D3,545,714669,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137143
B0144822
C0136842
D0153882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6629190.286619%
B6629460.693921%
C6629120.181023%
D66291812.730427%

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 7959 6630 0 0 0.00% 0.00%
B 7959 6630 9 9 0.11% 0.14%
C 7959 6630 0 0 0.00% 0.00%
D 7959 6630 147 147 1.85% 2.22%

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 8 15 68558 422.27 789 774 160.5
A 0 226 7533 42.11 789 774 160.5
A 12 194 7090 39.35 789 774 160.5
B 0 219 66357 434.05 804 788 151.1
B 4 81 54483 355.44 804 788 151.1
B 4 172 40998 266.18 804 788 151.1
C 8 128 6738 33.38 775 780 178.5
C 13 61 6265 30.73 775 780 178.5
C 9 54 4284 19.63 775 780 178.5
D 2 33 533018 2904.48 752 733 183.3
D 2 14 48967 263.19 752 733 183.3
D 13 137 38001 203.36 752 733 183.3

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