ASTROSAT CZTI

Data Quality Report

Orbit 35865

Creation date: 2022-06-08T19:48:55.935622
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_080T01_9000005146_35865cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35865cztM0_level2_quad_clean.evt
Size (bytes)604,889,28080,372,160
Size576.9 MB 76.6 MB
Events in quadrant A6,739,538511,709
Events in quadrant B4,188,378504,750
Events in quadrant C3,531,921522,459
Events in quadrant D3,477,785499,277

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240783
B0159682
C0139732
D0141322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56574257.512816%
B56574548.025455%
C56571091.926816%
D5657731.290437%

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 7299 5658 307 307 4.21% 5.43%
B 7299 5658 385 385 5.27% 6.80%
C 7299 5658 102 102 1.40% 1.80%
D 7299 5658 68 68 0.93% 1.20%

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 15 169 4001557 29966.27 658 647 133.5
A 10 83 164251 1225.37 658 647 133.5
A 7 48 17669 127.49 658 647 133.5
B 5 172 1149427 9281.47 643 628 123.8
B 5 255 450294 3632.98 643 628 123.8
B 4 232 21892 171.8 643 628 123.8
C 15 208 335289 2220.88 642 648 150.7
C 1 23 299761 1985.1 642 648 150.7
C 15 214 236626 1566.1 642 648 150.7
D 8 195 400458 2526.84 643 625 158.2
D 13 249 219191 1381.28 643 625 158.2
D 2 250 191560 1206.66 643 625 158.2

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