ASTROSAT CZTI

Data Quality Report

Orbit 10470

Creation date: 2024-06-27T15:59:38.492559
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/AS1A03_126T01_9000001512_10470cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10470cztM0_level2_quad_clean.evt
Size (bytes)501,520,32070,401,600
Size478.3 MB 67.1 MB
Events in quadrant A4,103,660413,943
Events in quadrant B3,638,774416,811
Events in quadrant C2,999,779415,063
Events in quadrant D3,990,785418,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021670
B021675
C021672
D020866

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246058367
B0246689605
C0220088322
D02871612401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063
B063
C063
D063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66803334.985030%
B66101792.708018%
C6725480.713755%
D6690961.434978%

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 7680 7182 225 225 2.93% 3.13%
B 7681 7127 60 60 0.78% 0.84%
C 7681 7225 1 1 0.01% 0.01%
D 7677 7064 17 17 0.22% 0.24%

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 15 174 734939 4626.98 770 751 158.7
A 13 251 223760 1405.44 770 751 158.7
A 3 80 109878 687.74 770 751 158.7
B 4 239 480217 3213.62 765 745 149.2
B 0 214 61381 406.41 765 745 149.2
B 11 51 46492 306.61 765 745 149.2
C 14 234 13786 72.91 764 767 178.6
C 13 61 5551 26.79 764 767 178.6
C 14 67 4994 23.67 764 767 178.6
D 1 20 704815 3783.93 762 741 186.1
D 8 195 222337 1190.93 762 741 186.1
D 1 52 57079 302.78 762 741 186.1

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