ASTROSAT CZTI

Data Quality Report

Orbit 40595

Creation date: 2024-06-27T22:18:00.393679
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_054T02_9000005550_40595cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40595cztM0_level2_quad_clean.evt
Size (bytes)376,551,36088,577,280
Size359.1 MB 84.5 MB
Events in quadrant A3,080,066636,692
Events in quadrant B3,058,256645,768
Events in quadrant C3,816,317581,453
Events in quadrant D3,529,647411,091

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126633
B0129352
C0151032
D0144522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5812180.309704%
B5812380.653820%
C58123455.935994%
D5812184831.796284%

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 7274 5813 7 7 0.10% 0.12%
B 7274 5813 28 28 0.38% 0.48%
C 7274 5813 328 328 4.51% 5.64%
D 7273 5812 108 108 1.48% 1.86%

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 553098 4284.58 627 613 128.9
A 2 79 51878 397.57 627 613 128.9
A 3 1 33454 254.69 627 613 128.9
B 0 190 368523 3077.41 622 606 119.6
B 5 255 70002 580.46 622 606 119.6
B 4 171 54728 452.7 622 606 119.6
C 14 254 1209502 8743.28 592 595 138.3
C 15 214 248928 1796.04 592 595 138.3
C 0 10 31483 223.39 592 595 138.3
D 12 227 395825 3154.73 502 487 125.3
D 12 191 384789 3066.67 502 487 125.3
D 13 249 230675 1836.86 502 487 125.3

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