ASTROSAT CZTI

Data Quality Report

Orbit 41231

Creation date: 2024-06-27T22:26:16.397842
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/AS1T05_102T01_9000005634_41231cztM0_level2.fits modeM0/AS1T05_102T01_9000005634_41231cztM0_level2_quad_clean.evt
Size (bytes)380,197,44086,500,800
Size362.6 MB 82.5 MB
Events in quadrant A4,300,793565,031
Events in quadrant B2,929,326593,606
Events in quadrant C3,080,509567,795
Events in quadrant D3,357,100527,952

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160233
B0122342
C0124222
D0135222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52173246.210466%
B52171172.242668%
C52171512.894384%
D52171663.181905%

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 7131 5218 382 382 5.36% 7.32%
B 7131 5218 90 90 1.26% 1.72%
C 7131 5218 146 146 2.05% 2.80%
D 7131 5218 174 174 2.44% 3.33%

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 0 8 1567653 13399.31 568 557 117.0
A 10 83 503556 4300.85 568 557 117.0
A 2 79 22134 184.49 568 557 117.0
B 0 229 441708 3908.76 576 559 112.9
B 0 190 129761 1144.78 576 559 112.9
B 5 255 56611 496.64 576 559 112.9
C 0 10 390145 2957.67 560 562 131.7
C 9 54 273014 2068.42 560 562 131.7
C 15 214 221729 1679.07 560 562 131.7
D 5 222 628055 4493.54 563 547 139.6
D 13 249 291766 2085.4 563 547 139.6
D 2 249 93088 662.68 563 547 139.6

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