ASTROSAT CZTI

Data Quality Report

Orbit 38958

Creation date: 2024-06-27T21:58:38.523035
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_38958cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38958cztM0_level2_quad_clean.evt
Size (bytes)366,085,44090,941,760
Size349.1 MB 86.7 MB
Events in quadrant A3,338,552609,161
Events in quadrant B2,627,298620,499
Events in quadrant C3,115,599598,871
Events in quadrant D4,042,656540,777

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134883
B0117152
C0127212
D0157802

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5491651.183755%
B5491611.110909%
C54911001.821162%
D54912965.390639%

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 7073 5492 57 57 0.81% 1.04%
B 7073 5492 42 42 0.59% 0.76%
C 7073 5492 100 100 1.41% 1.82%
D 7073 5491 254 254 3.59% 4.63%

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 6 10 434726 3559.23 598 584 122.0
A 10 83 424153 3472.55 598 584 122.0
A 13 248 128287 1046.95 598 584 122.0
B 5 172 252375 2180.76 596 580 115.5
B 0 230 23625 199.59 596 580 115.5
B 12 111 14479 120.38 596 580 115.5
C 14 254 590297 4315.28 584 587 136.7
C 15 214 226883 1655.95 584 587 136.7
C 10 20 8842 60.41 584 587 136.7
D 12 227 765307 5442.19 575 558 140.5
D 6 3 210499 1494.0 575 558 140.5
D 12 235 209515 1487.0 575 558 140.5

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