ASTROSAT CZTI

Data Quality Report

Orbit 46519

Creation date: 2024-06-27T23:24:09.065681
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_068T07_9000006222_46519cztM0_level2.fits modeM0/AS1A13_068T07_9000006222_46519cztM0_level2_quad_clean.evt
Size (bytes)584,190,720107,844,480
Size557.1 MB 102.8 MB
Events in quadrant A6,707,081737,428
Events in quadrant B3,888,883777,359
Events in quadrant C5,243,624639,367
Events in quadrant D5,276,659653,436

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245762
B0155622
C0200572
D0200222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65624006.095703%
B65622844.327949%
C6562104115.864066%
D65625057.695824%

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 7627 6562 37 37 0.49% 0.56%
B 7627 6562 42 42 0.55% 0.64%
C 7627 6562 772 772 10.12% 11.76%
D 7627 6562 382 382 5.01% 5.82%

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 3449385 21392.4 781 763 161.2
A 9 191 182855 1129.55 781 763 161.2
A 14 235 23492 140.99 781 763 161.2
B 3 112 194141 1249.26 785 763 154.8
B 8 234 146501 941.5 785 763 154.8
B 5 172 143192 920.12 785 763 154.8
C 14 254 2267595 13739.3 705 709 165.0
C 9 54 134597 811.48 705 709 165.0
C 12 2 40736 242.6 705 709 165.0
D 13 168 1209969 6370.48 762 737 189.8
D 1 52 769505 4050.03 762 737 189.8
D 13 249 119069 623.4 762 737 189.8

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