ASTROSAT CZTI

Data Quality Report

Orbit 00955

Creation date: 2024-06-27T14:05:16.131115
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/AS1P01_998T01_9000000188_00955cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00955cztM0_level2_quad_clean.evt
Size (bytes)946,569,60092,609,280
Size902.7 MB 88.3 MB
Events in quadrant A6,794,447617,879
Events in quadrant B7,381,878610,888
Events in quadrant C7,352,685594,186
Events in quadrant D6,761,974585,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242220
B0259420
C0258850
D0240660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5669540.952549%
B5669651.146587%
C5669530.934909%
D5669380.670312%

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 6894 5670 233 233 3.38% 4.11%
B 6894 5670 289 289 4.19% 5.10%
C 6894 5670 241 241 3.50% 4.25%
D 6894 5670 203 203 2.94% 3.58%

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 15 233 61515 143.69 1753 1760 415.9
A 11 79 6795 12.11 1753 1760 415.9
A 14 170 6362 11.06 1753 1760 415.9
B 7 221 110042 254.07 1824 1826 425.9
B 0 220 96149 221.45 1824 1826 425.9
B 4 232 48649 109.93 1824 1826 425.9
C 10 34 335525 708.23 1704 1762 471.3
C 15 241 271837 573.09 1704 1762 471.3
C 3 79 33053 66.4 1704 1762 471.3
D 1 4 283302 562.42 1646 1703 500.7
D 13 169 113564 223.41 1646 1703 500.7
D 0 255 69572 135.55 1646 1703 500.7

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