ASTROSAT CZTI

Data Quality Report

Orbit 28516

Creation date: 2024-06-27T19:52:45.007977
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/AS1A10_058T09_9000004100_28516cztM0_level2.evt modeM0/AS1A10_058T09_9000004100_28516cztM0_level2_quad_clean.evt
Size (bytes)601,891,20094,288,320
Size574.0 MB 89.9 MB
Events in quadrant A3,407,509641,756
Events in quadrant B3,994,863645,442
Events in quadrant C3,384,747610,784
Events in quadrant D7,014,489517,052

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139872
B0158692
C0138952
D0250632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63051021.617764%
B63052193.473434%
C63051031.633624%
D630599815.828707%

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 7620 6305 19 19 0.25% 0.30%
B 7620 6305 67 67 0.88% 1.06%
C 7620 6305 0 0 0.00% 0.00%
D 7620 6305 1039 1039 13.64% 16.48%

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 13 248 44864 260.89 851 836 168.8
A 15 174 35013 202.52 851 836 168.8
A 12 96 25010 143.24 851 836 168.8
B 4 171 487847 3102.92 842 825 157.0
B 10 245 59483 373.72 842 825 157.0
B 0 230 50122 314.08 842 825 157.0
C 14 238 131601 701.57 803 810 186.4
C 3 233 100779 536.24 803 810 186.4
C 7 247 10426 51.58 803 810 186.4
D 12 233 1880210 10450.68 756 736 179.8
D 8 195 1801239 10011.57 756 736 179.8
D 1 52 277772 1540.44 756 736 179.8

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