ASTROSAT CZTI

Data Quality Report

Orbit 35534

Creation date: 2022-04-25T11:06:16.183531
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/AS1A11_097T09_9000005086_35534cztM0_level2.evt modeM0/AS1A11_097T09_9000005086_35534cztM0_level2_quad_clean.evt
Size (bytes)448,289,28078,108,480
Size427.5 MB 74.5 MB
Events in quadrant A2,702,724506,524
Events in quadrant B2,747,729512,057
Events in quadrant C4,406,951494,380
Events in quadrant D3,355,211477,175

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114063
B0117302
C0165322
D0134972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A535560.112045%
B5355360.672269%
C53554308.029879%
D53551172.184874%

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 7118 5356 0 0 0.00% 0.00%
B 7118 5356 16 16 0.22% 0.30%
C 7118 5356 419 419 5.89% 7.82%
D 7118 5356 86 86 1.21% 1.61%

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 134303 1040.88 633 623 128.4
A 15 169 119164 923.0 633 623 128.4
A 13 254 7259 51.67 633 623 128.4
B 5 236 174598 1452.39 626 609 119.8
B 5 255 35920 294.76 626 609 119.8
B 5 207 31416 257.16 626 609 119.8
C 15 159 1314752 9300.79 606 610 141.3
C 0 10 375198 2651.13 606 610 141.3
C 15 214 221908 1566.23 606 610 141.3
D 8 195 246663 1638.19 614 597 150.2
D 12 235 222567 1477.77 614 597 150.2
D 13 249 221322 1469.48 614 597 150.2

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