ASTROSAT CZTI

Data Quality Report

Orbit 20104

Creation date: 2024-06-27T18:11:21.052860
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/AS1A05_180T01_9000002992_20104cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20104cztM0_level2_quad_clean.evt
Size (bytes)660,614,40084,718,080
Size630.0 MB 80.8 MB
Events in quadrant A6,105,398515,289
Events in quadrant B5,988,713546,398
Events in quadrant C3,471,933534,130
Events in quadrant D4,012,288526,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222902
B0223012
C0140362
D0158432

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6333112717.795673%
B633371811.337439%
C63331101.736934%
D63331442.273804%

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 7653 6334 720 720 9.41% 11.37%
B 7653 6334 462 462 6.04% 7.29%
C 7653 6334 0 0 0.00% 0.00%
D 7653 6334 62 62 0.81% 0.98%

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 14 238 1727736 10318.88 844 832 167.4
A 14 254 1106089 6604.32 844 832 167.4
A 14 237 19726 112.9 844 832 167.4
B 10 245 2484592 15106.84 880 863 164.4
B 0 183 27341 161.05 880 863 164.4
B 4 80 23186 135.78 880 863 164.4
C 14 238 138978 704.55 853 864 196.0
C 3 233 6349 27.98 853 864 196.0
C 13 61 5904 25.71 853 864 196.0
D 11 176 215715 1029.65 874 851 208.7
D 12 218 188667 900.03 874 851 208.7
D 7 96 167236 797.33 874 851 208.7

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