ASTROSAT CZTI

Data Quality Report

Orbit 48409

Creation date: 2024-09-10T00:41:32.134024
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_029T01_9000006426_48409cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48409cztM0_level2_quad_clean.evt
Size (bytes)559,033,920112,204,800
Size533.1 MB 107.0 MB
Events in quadrant A7,638,374751,798
Events in quadrant B4,052,143758,409
Events in quadrant C3,110,024744,543
Events in quadrant D5,329,215635,931

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281530
B0173500
C0149490
D0211780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72732623.602365%
B72742863.931812%
C727490.123728%
D72746058.317294%

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 7273 7273 30 30 0.41% 0.41%
B 7274 7274 124 124 1.70% 1.70%
C 7274 7274 2 2 0.03% 0.03%
D 7274 7274 451 451 6.20% 6.20%

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 4293675 26020.6 792 774 165.0
A 13 248 161164 972.17 792 774 165.0
A 15 235 87655 526.61 792 774 165.0
B 12 16 809677 5204.02 785 761 155.4
B 0 183 42214 266.68 785 761 155.4
B 8 234 36426 229.44 785 761 155.4
C 15 208 49893 265.78 779 783 184.8
C 14 254 10399 52.04 779 783 184.8
C 0 207 5712 26.68 779 783 184.8
D 12 2 1404955 7270.8 753 726 193.1
D 2 249 449404 2323.16 753 726 193.1
D 13 168 341746 1765.73 753 726 193.1

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