ASTROSAT CZTI

Data Quality Report

Orbit 40619

Creation date: 2024-06-27T22:18:18.902220
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_011T59_9000005552_40619cztM0_level2.fits modeM0/AS1A12_011T59_9000005552_40619cztM0_level2_quad_clean.evt
Size (bytes)322,508,16087,471,360
Size307.6 MB 83.4 MB
Events in quadrant A2,790,657615,939
Events in quadrant B2,831,180635,382
Events in quadrant C2,491,235605,723
Events in quadrant D3,417,559426,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113433
B0118512
C0106342
D0138022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A521370.134280%
B5213581.112603%
C521350.095914%
D5213133225.551506%

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 7246 5214 3 3 0.04% 0.06%
B 7246 5214 39 39 0.54% 0.75%
C 7246 5214 4 4 0.06% 0.08%
D 7246 5214 190 190 2.62% 3.64%

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 458197 3863.08 581 570 118.5
A 2 79 43289 360.61 581 570 118.5
A 12 189 39386 327.67 581 570 118.5
B 5 255 168552 1544.51 576 561 108.8
B 0 229 143261 1311.98 576 561 108.8
B 3 112 114589 1048.37 576 561 108.8
C 15 214 227606 1755.09 559 561 129.4
C 14 254 36482 277.67 559 561 129.4
C 9 187 27630 209.25 559 561 129.4
D 12 227 414927 3430.84 493 478 120.8
D 2 250 272487 2251.71 493 478 120.8
D 12 191 256345 2118.08 493 478 120.8

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