ASTROSAT CZTI

Data Quality Report

Orbit 42636

Creation date: 2024-06-27T22:42:29.631698
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_42636cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42636cztM0_level2_quad_clean.evt
Size (bytes)330,091,20082,690,560
Size314.8 MB 78.9 MB
Events in quadrant A2,715,780555,621
Events in quadrant B2,743,151569,826
Events in quadrant C2,415,638555,736
Events in quadrant D3,958,392475,197

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108282
B0114002
C0100332
D0150882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4954100.201857%
B4954501.009285%
C495450.100929%
D49544108.276140%

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 6988 4955 1 1 0.01% 0.02%
B 6988 4955 24 24 0.34% 0.48%
C 6988 4955 1 1 0.01% 0.02%
D 6988 4955 393 393 5.62% 7.93%

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 530239 4531.23 561 550 116.9
A 2 79 8170 65.19 561 550 116.9
A 13 254 6755 53.08 561 550 116.9
B 10 246 491256 4550.08 553 538 107.8
B 0 245 53298 489.21 553 538 107.8
B 0 168 16289 146.05 553 538 107.8
C 15 214 207415 1600.54 551 554 129.2
C 3 233 27454 208.13 551 554 129.2
C 14 254 15644 116.75 551 554 129.2
D 12 218 999895 7466.44 537 521 133.8
D 12 233 234560 1748.53 537 521 133.8
D 2 249 181296 1350.59 537 521 133.8

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