ASTROSAT CZTI

Data Quality Report

Orbit 00818

Creation date: 2024-06-27T14:03:23.298438
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/AS1P01_010T01_9000000112_00818cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00818cztM0_level2_quad_clean.evt
Size (bytes)272,828,16024,289,920
Size260.2 MB 23.2 MB
Events in quadrant A2,170,638152,188
Events in quadrant B2,033,862155,734
Events in quadrant C1,977,901155,587
Events in quadrant D1,968,256150,234

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076110
B072180
C070430
D070320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A165210.060533%
B165210.060533%
C165200.000000%
D165350.302480%

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 1652 1652 51 51 3.09% 3.09%
B 1652 1652 20 20 1.21% 1.21%
C 1652 1652 20 20 1.21% 1.21%
D 1653 1653 33 33 2.00% 2.00%

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 15 233 171043 1332.14 521 525 128.0
A 3 111 1533 7.87 521 525 128.0
A 11 79 1526 7.82 521 525 128.0
B 0 220 16523 128.73 520 525 124.3
B 2 2 15100 117.28 520 525 124.3
B 0 245 10668 81.62 520 525 124.3
C 15 241 41678 297.4 490 508 138.4
C 3 111 10493 72.13 490 508 138.4
C 3 79 9033 61.58 490 508 138.4
D 13 200 46146 293.92 499 516 155.2
D 10 157 13666 84.7 499 516 155.2
D 13 37 11044 67.81 499 516 155.2

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