ASTROSAT CZTI

Data Quality Report

Orbit 41696

Creation date: 2024-06-27T22:31:43.020242
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/AS1A12_035T02_9000005690_41696cztM0_level2.fits modeM0/AS1A12_035T02_9000005690_41696cztM0_level2_quad_clean.evt
Size (bytes)344,148,48092,257,920
Size328.2 MB 88.0 MB
Events in quadrant A3,062,871626,427
Events in quadrant B2,703,120631,242
Events in quadrant C2,860,569595,778
Events in quadrant D3,673,159545,638

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125792
B0120432
C0121282
D0150132

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5644160.283487%
B5644621.098512%
C5644981.736357%
D56442875.085046%

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 7107 5645 5 5 0.07% 0.09%
B 7107 5645 41 41 0.58% 0.73%
C 7107 5645 90 90 1.27% 1.59%
D 7107 5645 277 277 3.90% 4.91%

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 10 83 539976 4281.24 617 605 126.0
A 15 223 105639 833.7 617 605 126.0
A 13 248 27395 212.64 617 605 126.0
B 5 255 137875 1140.8 611 593 120.3
B 4 171 122924 1016.56 611 593 120.3
B 0 245 26425 214.66 611 593 120.3
C 0 10 277494 1966.74 600 601 140.8
C 15 214 231881 1642.76 600 601 140.8
C 14 254 7802 51.15 600 601 140.8
D 2 249 728693 4985.34 593 576 146.1
D 13 249 451075 3084.52 593 576 146.1
D 2 120 162626 1109.54 593 576 146.1

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