ASTROSAT CZTI

Data Quality Report

Orbit 41549

Creation date: 2024-06-27T22:30:19.193524
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/AS1A12_035T02_9000005676_41549cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41549cztM0_level2_quad_clean.evt
Size (bytes)332,858,88083,836,800
Size317.4 MB 80.0 MB
Events in quadrant A2,693,638577,533
Events in quadrant B2,274,637591,884
Events in quadrant C3,208,132529,725
Events in quadrant D3,761,158494,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110472
B0101262
C0125752
D0145882

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4925130.263959%
B492590.182741%
C49252675.421320%
D49253156.395939%

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 6989 4926 6 6 0.09% 0.12%
B 6989 4926 3 3 0.04% 0.06%
C 6989 4926 263 263 3.76% 5.34%
D 6989 4926 321 321 4.59% 6.52%

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 477403 4273.04 547 536 111.6
A 14 235 87043 775.16 547 536 111.6
A 13 248 9732 82.4 547 536 111.6
B 5 255 52564 493.06 545 530 105.5
B 0 189 45188 423.17 545 530 105.5
B 0 245 28034 260.62 545 530 105.5
C 0 10 651992 5290.52 524 527 123.1
C 14 254 238740 1934.52 524 527 123.1
C 15 214 212102 1718.19 524 527 123.1
D 1 47 909560 7194.73 523 509 126.3
D 5 222 368113 2909.42 523 509 126.3
D 13 249 307639 2430.8 523 509 126.3

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