ASTROSAT CZTI

Data Quality Report

Orbit 47620

Creation date: 2024-07-18T19:05:34.410433
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_071T01_9000006340_47620cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47620cztM0_level2_quad_clean.evt
Size (bytes)473,618,88097,032,960
Size451.7 MB 92.5 MB
Events in quadrant A7,097,517633,227
Events in quadrant B3,150,977676,073
Events in quadrant C3,119,170644,487
Events in quadrant D3,713,582578,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254621
B0131751
C0135271
D0150441

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A580262710.806618%
B58022113.636677%
C58031662.860589%
D58024036.945881%

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 7007 5803 310 310 4.42% 5.34%
B 7007 5803 53 53 0.76% 0.91%
C 7008 5804 119 119 1.70% 2.05%
D 7007 5803 255 255 3.64% 4.39%

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 3226387 23602.56 658 646 136.7
A 9 191 664251 4855.56 658 646 136.7
A 13 248 634650 4638.97 658 646 136.7
B 0 200 362591 2810.33 664 645 128.8
B 5 172 60826 467.28 664 645 128.8
B 5 32 46122 353.11 664 645 128.8
C 1 3 500743 3270.86 648 651 152.9
C 3 233 85147 552.65 648 651 152.9
C 14 254 10388 63.68 648 651 152.9
D 12 1 605731 3758.1 642 619 161.0
D 2 249 464645 2881.88 642 619 161.0
D 2 120 44693 273.72 642 619 161.0

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