ASTROSAT CZTI

Data Quality Report

Orbit 02980

Creation date: 2024-06-27T14:23:01.125867
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_238T05_9000000418_02980cztM0_level2.evt modeM0/AS1G05_238T05_9000000418_02980cztM0_level2_quad_clean.evt
Size (bytes)476,265,60071,539,200
Size454.2 MB 68.2 MB
Events in quadrant A5,339,732409,501
Events in quadrant B2,747,550481,848
Events in quadrant C2,369,738464,355
Events in quadrant D3,614,475446,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193553
B0113502
C0105932
D0142652

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A519196118.512811%
B5191160.308226%
C519160.115585%
D5191741.425544%

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 9503 5193 786 786 8.27% 15.14%
B 9503 5193 12 12 0.13% 0.23%
C 9503 5193 3 3 0.03% 0.06%
D 9503 5193 84 84 0.88% 1.62%

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 12 247 2061396 18954.54 541 529 108.7
A 13 9 1076510 9896.19 541 529 108.7
A 0 31 31421 284.12 541 529 108.7
B 2 249 119809 1021.11 605 593 116.8
B 6 203 89303 759.82 605 593 116.8
B 0 219 84165 715.81 605 593 116.8
C 6 80 42474 313.11 575 578 133.8
C 15 208 25578 186.83 575 578 133.8
C 10 55 17270 124.75 575 578 133.8
D 13 114 926114 6770.39 574 558 136.7
D 2 136 194876 1421.42 574 558 136.7
D 1 31 91834 667.68 574 558 136.7

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