ASTROSAT CZTI

Data Quality Report

Orbit 19622

Creation date: 2024-06-27T18:04:52.521383
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/AS1T03_116T01_9000002916_19622cztM0_level2.evt modeM0/AS1T03_116T01_9000002916_19622cztM0_level2_quad_clean.evt
Size (bytes)641,617,92093,971,520
Size611.9 MB 89.6 MB
Events in quadrant A3,035,847629,221
Events in quadrant B3,161,805637,096
Events in quadrant C3,187,820615,971
Events in quadrant D9,608,314512,141

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132401
B0135341
C0134911
D0330761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6464300.464109%
B6464570.881807%
C6464861.330446%
D6465221334.230472%

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 7424 6464 0 0 0.00% 0.00%
B 7424 6465 6 6 0.08% 0.09%
C 7424 6464 0 0 0.00% 0.00%
D 7425 6465 2020 2020 27.21% 31.25%

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 0 226 6800 37.87 786 770 159.2
A 3 137 6366 35.14 786 770 159.2
A 13 254 6247 34.39 786 770 159.2
B 0 230 28943 186.24 785 764 151.3
B 12 111 18449 116.88 785 764 151.3
B 0 198 17947 113.57 785 764 151.3
C 14 238 118085 653.01 761 766 179.7
C 3 233 96649 533.69 761 766 179.7
C 13 61 5402 25.8 761 766 179.7
D 1 52 5454496 33503.39 663 644 162.8
D 7 238 1484146 9113.25 663 644 162.8
D 2 16 138184 844.91 663 644 162.8

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