ASTROSAT CZTI

Data Quality Report

Orbit 43720

Creation date: 2024-06-27T22:54:58.607691
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_003T01_9000005902_43720cztM0_level2.fits modeM0/AS1A13_003T01_9000005902_43720cztM0_level2_quad_clean.evt
Size (bytes)832,556,160107,729,280
Size794.0 MB 102.7 MB
Events in quadrant A7,370,913833,306
Events in quadrant B4,648,707859,684
Events in quadrant C7,531,678610,499
Events in quadrant D10,745,922488,555

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267382
B0181752
C0269352
D0365223

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67443354.967378%
B67443585.308422%
C6744198829.478055%
D6743266839.566958%

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 7914 6745 53 53 0.67% 0.79%
B 7914 6745 132 132 1.67% 1.96%
C 7914 6743 1091 1091 13.79% 16.18%
D 7913 6744 2325 2325 29.38% 34.48%

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 15 222 2626261 15155.16 845 829 173.2
A 10 83 941044 5427.34 845 829 173.2
A 14 63 339357 1954.13 845 829 173.2
B 4 171 771862 4785.61 837 814 161.1
B 5 235 302010 1869.41 837 814 161.1
B 0 199 130011 801.88 837 814 161.1
C 15 157 3568257 22203.31 684 688 160.7
C 15 158 770119 4788.67 684 688 160.7
C 3 233 205489 1274.61 684 688 160.7
D 4 237 6217906 36689.23 667 646 169.5
D 5 235 394599 2324.79 667 646 169.5
D 7 80 265045 1560.27 667 646 169.5

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