ASTROSAT CZTI

Data Quality Report

Orbit 46139

Creation date: 2024-06-27T23:19:34.175549
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_098T02_9000006174_46139cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46139cztM0_level2_quad_clean.evt
Size (bytes)608,693,76097,018,560
Size580.5 MB 92.5 MB
Events in quadrant A5,771,444681,602
Events in quadrant B4,398,281659,169
Events in quadrant C3,261,188685,119
Events in quadrant D8,621,901480,001

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213811
B0172411
C0140681
D0299351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61831802.911208%
B61845408.732212%
C61841061.714101%
D6184178928.929495%

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 7318 6184 32 32 0.44% 0.52%
B 7319 6185 329 329 4.50% 5.32%
C 7319 6185 69 69 0.94% 1.12%
D 7319 6185 1281 1281 17.50% 20.71%

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 2917820 20000.46 705 689 145.9
A 14 235 50687 342.8 705 689 145.9
A 9 191 44193 298.27 705 689 145.9
B 3 112 1365375 10099.17 679 659 135.1
B 15 201 235466 1737.62 679 659 135.1
B 0 155 27356 197.56 679 659 135.1
C 12 2 338268 2050.26 694 697 164.6
C 2 14 213369 1291.68 694 697 164.6
C 3 233 5138 26.97 694 697 164.6
D 1 52 3772431 23830.03 617 597 158.3
D 2 249 737434 4655.25 617 597 158.3
D 8 129 378682 2388.7 617 597 158.3

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