ASTROSAT CZTI

Data Quality Report

Orbit 41436

Creation date: 2024-06-27T22:28:59.682542
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/AS1A12_035T01_9000005666_41436cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41436cztM0_level2_quad_clean.evt
Size (bytes)412,182,72099,195,840
Size393.1 MB 94.6 MB
Events in quadrant A3,555,089673,197
Events in quadrant B3,085,896690,387
Events in quadrant C3,482,846642,332
Events in quadrant D4,650,653563,675

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142483
B0134282
C0141262
D0182392

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6210190.305958%
B6210490.789050%
C62102243.607085%
D62106139.871176%

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 9045 6212 11 11 0.12% 0.18%
B 9045 6212 22 22 0.24% 0.35%
C 9045 6212 220 220 2.43% 3.54%
D 9045 6212 535 535 5.91% 8.61%

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 583596 4076.36 693 680 143.0
A 12 189 136820 952.03 693 680 143.0
A 13 248 84254 584.44 693 680 143.0
B 0 186 243134 1797.85 686 666 134.9
B 0 190 106325 783.44 686 666 134.9
B 5 252 23717 170.92 686 666 134.9
C 0 10 621090 3995.32 661 665 155.3
C 15 214 253999 1631.38 661 665 155.3
C 15 111 22034 137.61 661 665 155.3
D 1 47 1863913 11639.2 649 630 160.1
D 13 249 170250 1059.55 649 630 160.1
D 1 52 48536 299.25 649 630 160.1

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