ASTROSAT CZTI

Data Quality Report

Orbit 40436

Creation date: 2024-06-27T22:16:06.132247
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_022T01_9000005540_40436cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40436cztM0_level2_quad_clean.evt
Size (bytes)349,577,28096,004,800
Size333.4 MB 91.6 MB
Events in quadrant A3,052,849648,164
Events in quadrant B2,776,922664,076
Events in quadrant C2,785,902640,734
Events in quadrant D3,863,406540,798

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129443
B0124702
C0121632
D0157332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5914220.371999%
B5914300.507271%
C5914290.490362%
D591464610.923233%

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 8990 5916 7 7 0.08% 0.12%
B 8990 5916 17 17 0.19% 0.29%
C 8990 5916 15 15 0.17% 0.25%
D 8990 5916 180 180 2.00% 3.04%

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 502149 3895.46 631 619 128.7
A 2 79 52509 403.04 631 619 128.7
A 7 3 26484 200.9 631 619 128.7
B 4 170 156168 1270.57 627 609 122.4
B 5 255 100985 819.85 627 609 122.4
B 3 112 35608 285.86 627 609 122.4
C 15 214 253112 1747.28 619 622 144.5
C 14 254 91352 627.87 619 622 144.5
C 0 10 24658 166.33 619 622 144.5
D 2 250 486560 3380.69 587 571 143.8
D 12 227 459209 3190.43 587 571 143.8
D 12 128 397266 2759.53 587 571 143.8

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