ASTROSAT CZTI

Data Quality Report

Orbit 15685

Creation date: 2024-06-27T17:12:05.171496
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/AS1T02_084T01_9000002318_15685cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15685cztM0_level2_quad_clean.evt
Size (bytes)472,809,60090,558,720
Size450.9 MB 86.4 MB
Events in quadrant A3,049,849581,584
Events in quadrant B3,310,494588,610
Events in quadrant C3,342,943569,223
Events in quadrant D4,172,930548,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134823
B0140302
C0139752
D0170392

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6519270.414174%
B6519230.352815%
C6519400.613591%
D65194146.350667%

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 7540 6521 10 10 0.13% 0.15%
B 7540 6521 5 5 0.07% 0.08%
C 7540 6521 1 1 0.01% 0.02%
D 7540 6521 432 432 5.73% 6.62%

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 13 248 96560 614.86 765 749 155.8
A 4 2 12529 75.6 765 749 155.8
A 0 226 6917 39.58 765 749 155.8
B 0 189 105686 707.64 769 750 148.3
B 0 214 53464 355.48 769 750 148.3
B 4 216 42151 279.19 769 750 148.3
C 3 233 346055 2007.43 732 736 172.0
C 14 238 112380 649.01 732 736 172.0
C 9 54 16453 91.37 732 736 172.0
D 1 52 1336699 7544.24 720 698 177.1
D 10 40 42954 238.61 720 698 177.1
D 2 120 28352 156.16 720 698 177.1

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