ASTROSAT CZTI

Data Quality Report

Orbit 48303

Creation date: 2024-09-06T11:48:30.384254
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_029T01_9000006422_48303cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48303cztM0_level2_quad_clean.evt
Size (bytes)497,188,800107,115,840
Size474.2 MB 102.2 MB
Events in quadrant A6,993,380709,454
Events in quadrant B3,545,771746,413
Events in quadrant C2,994,469716,522
Events in quadrant D4,368,633619,046

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257323
B0146291
C0133791
D0173981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64723485.377009%
B64731772.734435%
C6473821.266801%
D64734697.245481%

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 7532 6473 28 28 0.37% 0.43%
B 7533 6474 13 13 0.17% 0.20%
C 7533 6474 1 1 0.01% 0.02%
D 7533 6474 321 321 4.26% 4.96%

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 3957959 24642.02 765 747 160.6
A 13 248 68900 424.39 765 747 160.6
A 13 254 13371 78.61 765 747 160.6
B 5 255 194216 1269.93 768 744 152.3
B 4 21 136100 888.46 768 744 152.3
B 0 200 62385 404.6 768 744 152.3
C 14 254 12423 65.46 756 760 178.2
C 12 2 8857 45.45 756 760 178.2
C 0 207 8434 43.07 756 760 178.2
D 2 165 1056029 5686.72 736 714 185.6
D 12 2 175159 940.02 736 714 185.6
D 12 128 99666 533.22 736 714 185.6

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