ASTROSAT CZTI

Data Quality Report

Orbit 08654

Creation date: 2024-06-27T15:35:30.022166
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_024T01_9000001206_08654cztM0_level2.evt modeM0/AS1G07_024T01_9000001206_08654cztM0_level2_quad_clean.evt
Size (bytes)454,530,240123,768,000
Size433.5 MB 118.0 MB
Events in quadrant A2,966,749821,953
Events in quadrant B3,382,217854,812
Events in quadrant C3,115,114850,106
Events in quadrant D3,876,805785,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130533
B0142372
C0135452
D0159912

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6245330.528423%
B6245791.265012%
C6245530.848679%
D62452954.723779%

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 7525 6246 4 4 0.05% 0.06%
B 7525 6246 38 38 0.50% 0.61%
C 7525 6245 21 21 0.28% 0.34%
D 7525 6246 261 261 3.47% 4.18%

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 5 109918 739.39 735 720 147.7
A 5 16 20050 130.88 735 720 147.7
A 13 251 9472 59.26 735 720 147.7
B 4 48 201104 1447.97 755 737 138.4
B 10 246 105369 756.13 755 737 138.4
B 0 219 58817 419.72 755 737 138.4
C 4 254 206246 1224.32 739 745 167.8
C 14 234 13222 74.33 739 745 167.8
C 13 61 5738 29.75 739 745 167.8
D 10 253 684998 3938.38 718 695 173.8
D 12 233 191243 1096.66 718 695 173.8
D 2 14 135949 778.43 718 695 173.8

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