ASTROSAT CZTI

Data Quality Report

Orbit 31985

Creation date: 2024-06-27T20:34:51.010371
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/AS1A10_058T12_9000004674_31985cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31985cztM0_level2_quad_clean.evt
Size (bytes)540,000,00091,278,720
Size515.0 MB 87.1 MB
Events in quadrant A3,155,964592,883
Events in quadrant B4,954,405589,391
Events in quadrant C3,422,813565,805
Events in quadrant D4,371,358553,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136041
B0200383
C0142931
D0173701

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6637470.708151%
B66361061.597348%
C66361462.200121%
D66361001.506932%

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 7607 6637 0 0 0.00% 0.00%
B 7606 6636 6 6 0.08% 0.09%
C 7606 6636 12 12 0.16% 0.18%
D 7606 6636 46 46 0.60% 0.69%

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 13 254 12668 72.28 815 801 164.2
A 14 238 9462 52.75 815 801 164.2
A 3 137 8526 47.05 815 801 164.2
B 6 159 1698714 10954.21 806 785 155.0
B 0 190 29309 184.02 806 785 155.0
B 0 213 21274 132.18 806 785 155.0
C 14 238 131261 710.8 778 781 183.6
C 3 233 112509 608.65 778 781 183.6
C 0 207 75632 407.76 778 781 183.6
D 8 195 934335 4989.51 781 761 187.1
D 2 250 238413 1270.14 781 761 187.1
D 7 238 133509 709.48 781 761 187.1

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