ASTROSAT CZTI

Data Quality Report

Orbit 44754

Creation date: 2024-06-27T23:06:07.215957
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/AS1A13_004T11_9000006018_44754cztM0_level2.fits modeM0/AS1A13_004T11_9000006018_44754cztM0_level2_quad_clean.evt
Size (bytes)381,424,32087,168,960
Size363.8 MB 83.1 MB
Events in quadrant A4,470,989573,649
Events in quadrant B2,698,437591,033
Events in quadrant C2,556,575575,910
Events in quadrant D3,961,869510,493

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178852
B0118742
C0117572
D0156752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55441773.192641%
B55441041.875902%
C5544550.992063%
D55453075.536519%

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 5619 5547 60 60 1.07% 1.08%
B 5619 5547 11 11 0.20% 0.20%
C 5619 5547 14 14 0.25% 0.25%
D 5620 5547 258 258 4.59% 4.65%

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 1446970 11539.84 601 587 125.3
A 15 223 685012 5460.62 601 587 125.3
A 2 79 9682 72.56 601 587 125.3
B 0 189 149980 1239.83 601 581 120.5
B 5 255 114161 942.58 601 581 120.5
B 0 219 16087 128.68 601 581 120.5
C 14 254 202455 1436.51 596 600 140.5
C 12 2 13458 91.5 596 600 140.5
C 3 233 11974 80.94 596 600 140.5
D 1 52 849799 5783.56 580 560 146.8
D 13 249 333722 2268.93 580 560 146.8
D 1 47 259411 1762.85 580 560 146.8

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