ASTROSAT CZTI

Data Quality Report

Orbit 37481

Creation date: 2024-06-27T21:40:34.999691
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_001T11_9000005326_37481cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37481cztM0_level2_quad_clean.evt
Size (bytes)472,043,52099,483,840
Size450.2 MB 94.9 MB
Events in quadrant A3,018,840671,705
Events in quadrant B3,548,137667,765
Events in quadrant C2,763,320673,755
Events in quadrant D4,588,736611,132

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122903
B0142162
C0117002
D0174862

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5545160.288548%
B55452985.374211%
C5545330.595131%
D55455379.684400%

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 7097 5546 13 13 0.18% 0.23%
B 7097 5546 254 254 3.58% 4.58%
C 7097 5546 27 27 0.38% 0.49%
D 7097 5546 505 505 7.12% 9.11%

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 296104 2411.28 610 598 122.6
A 15 222 167695 1363.48 610 598 122.6
A 13 248 88009 713.26 610 598 122.6
B 5 172 755615 6553.96 596 579 115.2
B 5 255 111410 962.05 596 579 115.2
B 0 229 110524 954.36 596 579 115.2
C 15 214 238047 1733.56 592 596 137.0
C 14 254 146074 1062.09 592 596 137.0
C 0 10 55487 400.74 592 596 137.0
D 13 249 1094627 7877.36 570 554 138.9
D 12 227 512647 3687.09 570 554 138.9
D 2 249 255429 1835.11 570 554 138.9

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