ASTROSAT CZTI

Data Quality Report

Orbit 38591

Creation date: 2024-06-27T21:53:49.046971
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_052T04_9000005388_38591cztM0_level2.fits modeM0/AS1A12_052T04_9000005388_38591cztM0_level2_quad_clean.evt
Size (bytes)494,331,84095,028,480
Size471.4 MB 90.6 MB
Events in quadrant A2,894,488684,264
Events in quadrant B4,741,240635,440
Events in quadrant C6,463,989602,394
Events in quadrant D3,807,358601,089

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115643
B0173122
C0228002
D0145932

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5052140.277118%
B505266913.242280%
C505275714.984165%
D50521963.879652%

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 7055 5053 6 6 0.09% 0.12%
B 7054 5052 538 538 7.63% 10.65%
C 7054 5052 699 699 9.91% 13.84%
D 7054 5052 194 194 2.75% 3.84%

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 394281 3131.51 632 623 125.7
A 13 248 38020 297.49 632 623 125.7
A 13 254 8133 59.74 632 623 125.7
B 5 184 2017070 18073.63 598 584 111.6
B 5 172 179537 1603.94 598 584 111.6
B 4 251 79155 704.23 598 584 111.6
C 14 254 3874762 28492.11 596 601 136.0
C 15 214 202843 1487.37 596 601 136.0
C 0 10 44157 320.33 596 601 136.0
D 1 47 939086 6385.79 612 596 147.0
D 10 118 111647 755.63 612 596 147.0
D 12 235 70249 473.94 612 596 147.0

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