ASTROSAT CZTI

Data Quality Report

Orbit 46140

Creation date: 2024-06-27T23:19:35.257186
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/AS1A13_098T02_9000006174_46140cztM0_level2.fits modeM0/AS1A13_098T02_9000006174_46140cztM0_level2_quad_clean.evt
Size (bytes)678,893,760102,594,240
Size647.4 MB 97.8 MB
Events in quadrant A6,336,112715,139
Events in quadrant B6,250,947712,127
Events in quadrant C3,650,075730,220
Events in quadrant D8,399,405503,412

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231262
B0230972
C0152202
D0294124

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63873665.730390%
B638764510.098638%
C63871782.786911%
D6386188529.517695%

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 7582 6388 122 122 1.61% 1.91%
B 7582 6388 383 383 5.05% 6.00%
C 7582 6388 116 116 1.53% 1.82%
D 7581 6387 1342 1342 17.70% 21.01%

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 3215801 20789.88 744 729 154.6
A 0 247 167806 1080.38 744 729 154.6
A 0 226 15479 95.38 744 729 154.6
B 3 112 3197955 22336.0 731 711 143.1
B 5 255 51446 354.44 731 711 143.1
B 5 32 39281 269.45 731 711 143.1
C 12 2 596156 3431.61 737 744 173.5
C 2 14 160287 919.51 737 744 173.5
C 3 233 10767 57.77 737 744 173.5
D 1 52 2780395 16783.87 648 628 165.6
D 2 249 970938 5858.6 648 628 165.6
D 8 129 826714 4987.8 648 628 165.6

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