ASTROSAT CZTI

Data Quality Report

Orbit 36744

Creation date: 2024-06-27T21:31:06.349477
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/AS1A11_101T01_9000005238_36744cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36744cztM0_level2_quad_clean.evt
Size (bytes)625,867,20056,701,440
Size596.9 MB 54.1 MB
Events in quadrant A2,895,180342,632
Events in quadrant B3,214,998341,876
Events in quadrant C3,311,783330,842
Events in quadrant D9,127,546282,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123333
B0133002
C0134502
D0312662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A598440.066845%
B5984951.587567%
C59841131.888369%
D5984189531.667781%

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 7298 5985 0 0 0.00% 0.00%
B 7298 5985 67 67 0.92% 1.12%
C 7298 5985 93 93 1.27% 1.55%
D 7298 5985 1909 1909 26.16% 31.90%

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 239914 1716.49 682 668 139.4
A 13 6 11225 75.74 682 668 139.4
A 13 254 10552 70.91 682 668 139.4
B 5 255 194799 1492.29 674 655 130.1
B 0 213 120973 924.82 674 655 130.1
B 4 171 78996 602.17 674 655 130.1
C 0 10 289328 1875.1 653 657 153.9
C 15 214 254277 1647.43 653 657 153.9
C 14 254 211105 1367.0 653 657 153.9
D 12 227 6316254 42752.57 595 578 147.7
D 2 250 108802 732.6 595 578 147.7
D 13 249 93248 627.31 595 578 147.7

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