ASTROSAT CZTI

Data Quality Report

Orbit 51295

Creation date: 2025-03-23T12:45:47.093842
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/AS1C07_001T01_9000006454_51295cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51295cztM0_level2_quad_clean.evt
Size (bytes)2,058,192,000226,264,320
Size1.9 GB 215.8 MB
Events in quadrant A15,617,4741,541,896
Events in quadrant B13,098,5551,740,234
Events in quadrant C19,446,2911,237,103
Events in quadrant D26,705,8691,146,744

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0584953
B0507753
C0700823
D0912573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A171798885.169102%
B171796623.853542%
C17179411123.930380%
D17180438625.529686%

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 20259 17182 487 487 2.40% 2.83%
B 20259 17182 347 347 1.71% 2.02%
C 20259 17182 3546 3546 17.50% 20.64%
D 20260 17183 5555 5555 27.42% 32.33%

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 12 3 4497401 10369.6 1753 1712 433.5
A 9 160 826322 1902.02 1753 1712 433.5
A 12 250 733244 1687.33 1753 1712 433.5
B 10 254 3249516 8745.75 1772 1711 371.4
B 5 172 675106 1813.33 1772 1711 371.4
B 7 252 355962 953.93 1772 1711 371.4
C 4 12 11505587 27070.53 1533 1521 425.0
C 13 3 279541 654.22 1533 1521 425.0
C 3 233 219052 511.88 1533 1521 425.0
D 8 176 14981247 33603.17 1589 1532 445.8
D 3 12 1760159 3945.03 1589 1532 445.8
D 12 2 897596 2010.09 1589 1532 445.8

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