ASTROSAT CZTI

Data Quality Report

Orbit 42617

Creation date: 2024-06-27T22:42:15.883321
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/AS1A05_174T01_9000005820_42617cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42617cztM0_level2_quad_clean.evt
Size (bytes)357,526,08094,075,200
Size341.0 MB 89.7 MB
Events in quadrant A3,028,961638,054
Events in quadrant B2,763,113640,260
Events in quadrant C2,705,446633,130
Events in quadrant D4,308,529552,320

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0320
C0320
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122122
B0118892
C0112522
D0165902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5500130.236364%
B55001562.836364%
C5500100.181818%
D55003836.963636%

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 7383 5501 6 6 0.08% 0.11%
B 7383 5501 17 17 0.23% 0.31%
C 7383 5501 4 4 0.05% 0.07%
D 7383 5501 326 326 4.42% 5.93%

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 565152 4407.68 619 604 128.1
A 7 3 56953 439.94 619 604 128.1
A 13 248 12473 92.67 619 604 128.1
B 0 168 264163 2232.11 610 594 118.1
B 0 245 84265 708.59 610 594 118.1
B 12 111 14567 118.33 610 594 118.1
C 15 214 228786 1572.63 617 622 145.1
C 3 233 25644 172.47 617 622 145.1
C 14 254 19966 133.33 617 622 145.1
D 1 52 691861 4712.53 598 582 146.7
D 1 47 369251 2513.26 598 582 146.7
D 12 6 349292 2377.2 598 582 146.7

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