ASTROSAT CZTI

Data Quality Report

Orbit 31889

Creation date: 2024-06-27T20:33:52.612566
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/AS1T04_042T01_9000004650_31889cztM0_level2.evt modeM0/AS1T04_042T01_9000004650_31889cztM0_level2_quad_clean.evt
Size (bytes)572,451,840116,769,600
Size545.9 MB 111.4 MB
Events in quadrant A3,733,841812,065
Events in quadrant B5,117,255790,075
Events in quadrant C3,410,600758,226
Events in quadrant D4,661,605749,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149921
B0192641
C0138981
D0177764

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61132534.138721%
B61141883.074910%
C61141863.042198%
D61131392.273843%

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 7413 6114 113 113 1.52% 1.85%
B 7414 6115 34 34 0.46% 0.56%
C 7414 6115 27 27 0.36% 0.44%
D 7413 6114 54 54 0.73% 0.88%

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 0 13 501846 3058.45 835 822 163.8
A 13 6 12008 68.28 835 822 163.8
A 13 254 9784 54.71 835 822 163.8
B 6 159 1604585 10345.81 817 798 155.0
B 10 245 228389 1468.16 817 798 155.0
B 0 213 33136 208.61 817 798 155.0
C 14 238 130960 727.19 779 786 179.0
C 3 233 126575 702.69 779 786 179.0
C 0 10 91368 506.02 779 786 179.0
D 8 195 1240527 6607.05 808 788 187.6
D 12 79 148510 787.27 808 788 187.6
D 12 33 106002 560.73 808 788 187.6

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