ASTROSAT CZTI

Data Quality Report

Orbit 13556

Creation date: 2024-06-27T16:42:34.398039
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/AS1G08_032T01_9000001998_13556cztM0_level2.evt modeM0/AS1G08_032T01_9000001998_13556cztM0_level2_quad_clean.evt
Size (bytes)1,002,562,560198,325,440
Size956.1 MB 189.1 MB
Events in quadrant A6,562,0171,228,546
Events in quadrant B6,956,0441,214,481
Events in quadrant C6,886,7381,310,281
Events in quadrant D8,979,7501,255,916

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033135
B033038
C033040
D033042

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330893607
B0342123759
C0332623713
D0411004215

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14473590.407656%
B144731030.711670%
C14443510.353112%
D144274663.230055%

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 17466 14796 0 0 0.00% 0.00%
B 17466 14784 23 23 0.13% 0.16%
C 17466 14751 1 1 0.01% 0.01%
D 17466 14753 321 321 1.84% 2.18%

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 14 238 39422 110.52 1685 1646 341.8
A 1 162 27969 77.01 1685 1646 341.8
A 0 226 15206 39.67 1685 1646 341.8
B 3 64 173281 545.89 1669 1631 314.4
B 3 209 94516 295.4 1669 1631 314.4
B 4 142 41841 127.88 1669 1631 314.4
C 3 233 365796 960.26 1656 1668 379.2
C 7 238 32368 80.96 1656 1668 379.2
C 13 61 11868 26.9 1656 1668 379.2
D 13 122 1649632 4179.11 1640 1597 394.4
D 5 222 304882 769.07 1640 1597 394.4
D 8 195 292074 736.6 1640 1597 394.4

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