ASTROSAT CZTI

Data Quality Report

Orbit 09949

Creation date: 2024-06-27T15:52:49.692771
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/AS1G07_016T01_9000001420_09949cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09949cztM0_level2_quad_clean.evt
Size (bytes)476,352,00071,219,520
Size454.3 MB 67.9 MB
Events in quadrant A3,101,935427,339
Events in quadrant B3,257,969432,578
Events in quadrant C3,022,322431,486
Events in quadrant D4,590,443400,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016826
B016824
C016828
D016828

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173383398
B0175133406
C0172413429
D0230285215

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66951972.942494%
B66852363.530292%
C66791812.709987%
D64733465.345280%

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 8475 7275 2 2 0.02% 0.03%
B 8470 7256 3 3 0.04% 0.04%
C 8475 7290 0 0 0.00% 0.00%
D 8475 7091 176 176 2.08% 2.48%

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 15 174 43704 263.57 785 765 162.9
A 8 15 16183 94.64 785 765 162.9
A 14 111 9526 53.78 785 765 162.9
B 4 239 37949 242.13 790 766 153.6
B 0 214 35679 227.35 790 766 153.6
B 0 219 34900 222.28 790 766 153.6
C 8 128 9045 46.07 769 772 179.5
C 13 61 5771 27.84 769 772 179.5
C 8 112 5409 25.82 769 772 179.5
D 2 16 884935 4720.55 729 707 187.3
D 8 195 310991 1656.49 729 707 187.3
D 2 152 227824 1212.49 729 707 187.3

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