ASTROSAT CZTI

Data Quality Report

Orbit 20170128_G06_036T01_9000000988_level2

Creation date: 2025-11-09T07:10:59.012969
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/AS1G06_036T01_9000000988cztM0_level2.fits modeM0/AS1G06_036T01_9000000988cztM0_level2_quad_clean.evt
Size (bytes)420,762,240404,023,680
Size401.3 MB 385.3 MB
Events in quadrant A2,508,0482,337,983
Events in quadrant B2,443,5042,367,364
Events in quadrant C2,496,5942,291,071
Events in quadrant D2,143,3242,088,426

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0949930
B0973460
C01016920
D01090350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09320
B09320
C09320
D09320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A459057871.714410%
B459038971.954121%
C459056531.422503%
D4590410982.391948%

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 50490 45602 0 0 0.00% 0.00%
B 50490 45604 0 0 0.00% 0.00%
C 50490 45605 0 0 0.00% 0.00%
D 50490 45604 0 0 0.00% 0.00%

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 14 188 2527 11.35 650 604 169.4
A 0 29 2372 10.44 650 604 169.4
A 14 204 2206 9.46 650 604 169.4
B 2 9 2212 12.02 643 609 133.3
B 2 8 1662 7.9 643 609 133.3
B 3 17 1661 7.89 643 609 133.3
C 12 241 1822 6.87 659 608 176.6
C 1 81 1800 6.75 659 608 176.6
C 1 80 1779 6.63 659 608 176.6
D 3 14 1646 6.55 610 549 167.4
D 3 31 1569 6.09 610 549 167.4
D 6 231 1561 6.05 610 549 167.4

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