ASTROSAT CZTI

Data Quality Report

Orbit 26817

Creation date: 2024-06-27T19:33:18.045798
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/AS1A09_079T01_9000003864_26817cztM0_level2.evt modeM0/AS1A09_079T01_9000003864_26817cztM0_level2_quad_clean.evt
Size (bytes)840,496,320111,839,040
Size801.6 MB 106.7 MB
Events in quadrant A4,003,167797,910
Events in quadrant B12,964,102568,291
Events in quadrant C3,331,055798,251
Events in quadrant D4,713,333763,614

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163170
B0430220
C0139590
D0183900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6559580.884281%
B6559383758.499771%
C6559891.356914%
D65593565.427657%

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 7594 6560 0 0 0.00% 0.00%
B 7594 6559 3200 3200 42.14% 48.79%
C 7594 6560 14 14 0.18% 0.21%
D 7594 6559 246 246 3.24% 3.75%

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 0 13 928163 5798.25 797 780 159.9
A 13 254 10929 63.45 797 780 159.9
A 3 137 7430 41.58 797 780 159.9
B 0 189 10443174 93055.22 593 577 112.2
B 10 246 145229 1289.01 593 577 112.2
B 10 251 18708 161.57 593 577 112.2
C 14 238 126228 689.06 778 782 182.1
C 15 208 86100 468.64 778 782 182.1
C 2 16 81741 444.7 778 782 182.1
D 1 52 1084577 5947.08 764 747 182.2
D 2 250 345583 1892.15 764 747 182.2
D 11 176 187952 1027.21 764 747 182.2

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