ASTROSAT CZTI

Data Quality Report

Orbit 04920

Creation date: 2024-06-27T14:48:50.554035
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_118T01_9000000622_04920cztM0_level2.evt modeM0/AS1G05_118T01_9000000622_04920cztM0_level2_quad_clean.evt
Size (bytes)468,950,40082,753,920
Size447.2 MB 78.9 MB
Events in quadrant A3,008,375526,890
Events in quadrant B3,350,588531,198
Events in quadrant C2,820,881525,328
Events in quadrant D4,607,032495,202

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127072
B0137831
C0125441
D0178021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6120510.833333%
B61201181.928105%
C6120230.375817%
D61202674.362745%

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 7410 6121 4 4 0.05% 0.07%
B 7410 6120 66 66 0.89% 1.08%
C 7410 6121 4 4 0.05% 0.07%
D 7410 6120 248 248 3.35% 4.05%

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 31 92748 609.3 746 731 151.0
A 13 14 13991 87.8 746 731 151.0
A 15 222 10735 66.24 746 731 151.0
B 10 16 207018 1504.77 737 721 137.1
B 4 48 141186 1024.58 737 721 137.1
B 15 204 96321 697.32 737 721 137.1
C 1 16 14305 83.53 714 717 162.7
C 9 247 9411 53.45 714 717 162.7
C 12 4 7745 43.2 714 717 162.7
D 2 33 563771 3284.17 713 692 171.5
D 1 7 497667 2898.62 713 692 171.5
D 2 136 247907 1441.89 713 692 171.5

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