ASTROSAT CZTI

Data Quality Report

Orbit 38924

Creation date: 2024-06-27T21:58:12.919010
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/AS1T05_064T01_9000005416_38924cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38924cztM0_level2_quad_clean.evt
Size (bytes)348,076,80096,969,600
Size332.0 MB 92.5 MB
Events in quadrant A3,194,267661,362
Events in quadrant B2,472,467672,956
Events in quadrant C2,593,199654,032
Events in quadrant D4,222,716586,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127783
B0107382
C0107022
D0161092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5165400.774443%
B5165280.542110%
C516560.116167%
D51652635.091965%

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 7167 5166 27 27 0.38% 0.52%
B 7167 5166 17 17 0.24% 0.33%
C 7167 5166 2 2 0.03% 0.04%
D 7167 5166 245 245 3.42% 4.74%

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 431584 3579.85 603 594 120.4
A 15 222 199212 1649.74 603 594 120.4
A 13 248 87530 722.1 603 594 120.4
B 5 172 63864 567.22 601 586 111.6
B 5 200 21513 187.59 601 586 111.6
B 12 111 13208 113.14 601 586 111.6
C 15 214 212669 1530.98 600 605 138.5
C 3 233 18027 125.78 600 605 138.5
C 0 10 10019 67.96 600 605 138.5
D 12 227 652849 4589.6 590 574 142.1
D 2 249 358513 2518.56 590 574 142.1
D 12 235 207577 1456.53 590 574 142.1

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