ASTROSAT CZTI

Data Quality Report

Orbit 18725

Creation date: 2024-06-27T17:54:12.385631
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/AS1A05_226T06_9000002800_18725cztM0_level2.evt modeM0/AS1A05_226T06_9000002800_18725cztM0_level2_quad_clean.evt
Size (bytes)451,673,28069,451,200
Size430.7 MB 66.2 MB
Events in quadrant A3,164,926422,803
Events in quadrant B3,579,864427,210
Events in quadrant C3,271,785400,559
Events in quadrant D3,217,821396,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134392
B0146753
C0138052
D0139912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6536580.887393%
B65351171.790360%
C65351392.127008%
D6535871.331293%

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 7516 6537 1 1 0.01% 0.02%
B 7515 6536 33 33 0.44% 0.50%
C 7515 6536 52 52 0.69% 0.80%
D 7515 6536 52 52 0.69% 0.80%

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 21867 129.39 811 795 162.9
A 13 254 10071 56.96 811 795 162.9
A 15 192 9375 52.68 811 795 162.9
B 10 245 379596 2445.4 807 785 154.9
B 12 111 19121 118.36 807 785 154.9
B 11 111 16548 101.75 807 785 154.9
C 3 233 155765 862.56 768 774 179.7
C 14 238 120397 665.73 768 774 179.7
C 13 61 5508 26.35 768 774 179.7
D 14 34 146201 761.71 777 755 190.9
D 7 96 54846 283.28 777 755 190.9
D 7 238 49145 253.42 777 755 190.9

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