ASTROSAT CZTI

Data Quality Report

Orbit 04980

Creation date: 2024-06-27T14:49:41.809547
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/AS1G05_158T01_9000000630_04980cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04980cztM0_level2_quad_clean.evt
Size (bytes)538,378,56088,796,160
Size513.4 MB 84.7 MB
Events in quadrant A3,028,907594,650
Events in quadrant B3,962,235583,821
Events in quadrant C3,008,499590,818
Events in quadrant D5,881,544483,722

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130442
B0157891
C0131541
D0217601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62421472.355014%
B62423145.030439%
C62421131.810317%
D6242121119.400833%

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 7412 6242 0 0 0.00% 0.00%
B 7412 6242 150 150 2.02% 2.40%
C 7412 6242 9 9 0.12% 0.14%
D 7411 6241 1041 1041 14.05% 16.68%

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 50 17882 108.31 778 763 158.1
A 12 194 8028 45.96 778 763 158.1
A 0 226 7830 44.71 778 763 158.1
B 14 167 547020 3727.63 770 753 146.5
B 0 219 260530 1772.67 770 753 146.5
B 4 239 69764 470.92 770 753 146.5
C 1 16 94656 545.25 745 749 172.2
C 9 54 6956 36.04 745 749 172.2
C 13 61 6245 31.91 745 749 172.2
D 4 95 2622984 15945.32 668 649 164.5
D 13 235 206781 1253.4 668 649 164.5
D 2 136 131771 797.3 668 649 164.5

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