ASTROSAT CZTI

Data Quality Report

Orbit 44878

Creation date: 2024-06-27T23:08:30.572885
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_042T03_9000006030_44878cztM0_level2.fits modeM0/AS1A13_042T03_9000006030_44878cztM0_level2_quad_clean.evt
Size (bytes)517,190,400117,455,040
Size493.2 MB 112.0 MB
Events in quadrant A5,580,059793,195
Events in quadrant B3,658,756826,949
Events in quadrant C3,376,124792,716
Events in quadrant D6,011,570677,988

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216182
B0152572
C0144742
D0224622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66802323.473054%
B66801382.065868%
C6680901.347305%
D668068710.284431%

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 7840 6681 12 12 0.15% 0.18%
B 7840 6681 21 21 0.27% 0.31%
C 7840 6681 13 13 0.17% 0.19%
D 7840 6681 435 435 5.55% 6.51%

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 2341100 13763.54 821 804 170.0
A 7 3 30485 174.56 821 804 170.0
A 2 79 11483 62.8 821 804 170.0
B 5 255 225092 1401.46 818 794 160.0
B 0 155 53215 327.54 818 794 160.0
B 0 186 39636 242.69 818 794 160.0
C 1 3 122965 646.5 811 819 188.9
C 5 4 58308 304.28 811 819 188.9
C 14 254 9732 47.18 811 819 188.9
D 1 52 1385688 7043.69 786 764 196.6
D 13 249 687116 3490.77 786 764 196.6
D 5 171 462267 2347.19 786 764 196.6

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