ASTROSAT CZTI

Data Quality Report

Orbit 40132

Creation date: 2024-06-27T22:12:43.093128
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_004T01_9000005520_40132cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40132cztM0_level2_quad_clean.evt
Size (bytes)547,591,68086,886,720
Size522.2 MB 82.9 MB
Events in quadrant A2,939,732635,054
Events in quadrant B2,572,042658,243
Events in quadrant C8,621,243435,637
Events in quadrant D5,679,346489,644

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122573
B0119212
C0296522
D0208712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5890110.186757%
B589090.152801%
C5890207335.195246%
D5890100016.977929%

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 7233 5891 4 4 0.06% 0.07%
B 7233 5891 2 2 0.03% 0.03%
C 7232 5890 2009 2009 27.78% 34.11%
D 7232 5890 1043 1043 14.42% 17.71%

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 447428 3414.72 637 625 130.8
A 6 10 20497 151.87 637 625 130.8
A 7 3 7848 55.2 637 625 130.8
B 5 255 37163 292.81 634 616 124.8
B 12 111 15654 120.48 634 616 124.8
B 11 111 14435 110.72 634 616 124.8
C 9 187 6291273 52002.61 518 522 121.0
C 15 214 204609 1687.09 518 522 121.0
C 14 254 46359 378.91 518 522 121.0
D 12 227 2578037 18405.33 564 548 140.0
D 1 47 568847 4058.11 564 548 140.0
D 9 19 112445 799.03 564 548 140.0

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