ASTROSAT CZTI

Data Quality Report

Orbit 40660

Creation date: 2024-06-27T22:18:48.811783
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/AS1A12_029T01_9000005556_40660cztM0_level2.fits modeM0/AS1A12_029T01_9000005556_40660cztM0_level2_quad_clean.evt
Size (bytes)314,153,28086,054,400
Size299.6 MB 82.1 MB
Events in quadrant A2,670,679580,164
Events in quadrant B2,729,342596,131
Events in quadrant C2,534,915574,126
Events in quadrant D3,280,236483,944

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112111
B0116911
C0109011
D0134831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A530280.150886%
B5302801.508865%
C530280.150886%
D53025159.713316%

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 6915 5303 5 5 0.07% 0.09%
B 6915 5303 35 35 0.51% 0.66%
C 6915 5303 5 5 0.07% 0.09%
D 6915 5303 126 126 1.82% 2.38%

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 373717 3091.71 585 573 120.7
A 13 28 15261 121.7 585 573 120.7
A 15 191 14847 118.27 585 573 120.7
B 0 229 345020 3027.1 580 563 113.8
B 0 190 40094 347.4 580 563 113.8
B 5 255 26288 226.07 580 563 113.8
C 15 214 225804 1680.91 571 574 134.0
C 12 249 46798 344.97 571 574 134.0
C 14 254 16298 117.35 571 574 134.0
D 12 227 612236 4579.15 539 522 133.6
D 2 250 251668 1880.02 539 522 133.6
D 12 191 141515 1055.44 539 522 133.6

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