ASTROSAT CZTI

Data Quality Report

Orbit 14458

Creation date: 2024-06-27T16:55:26.272784
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/AS1G08_025T01_9000002130_14458cztM0_level2.evt modeM0/AS1G08_025T01_9000002130_14458cztM0_level2_quad_clean.evt
Size (bytes)1,271,692,800250,801,920
Size1.2 GB 239.2 MB
Events in quadrant A7,866,6421,683,160
Events in quadrant B8,484,9661,655,298
Events in quadrant C8,415,7331,646,744
Events in quadrant D12,692,5051,534,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0336514
B0359463
C0348393
D0482703

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156041120.717765%
B156042421.550884%
C156041340.858754%
D1560413968.946424%

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 19129 15605 0 0 0.00% 0.00%
B 19129 15605 59 59 0.31% 0.38%
C 19129 15605 4 4 0.02% 0.03%
D 19129 15605 1293 1293 6.76% 8.29%

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 12 189 199495 512.74 1932 1896 385.4
A 14 14 89422 227.12 1932 1896 385.4
A 8 15 74303 187.89 1932 1896 385.4
B 0 189 218968 605.41 1923 1878 358.6
B 15 222 190242 525.3 1923 1878 358.6
B 0 219 168754 465.38 1923 1878 358.6
C 3 233 1021251 2370.28 1883 1894 430.1
C 14 234 34510 75.84 1883 1894 430.1
C 7 247 19124 40.06 1883 1894 430.1
D 13 122 2941396 6148.24 1803 1770 478.1
D 10 199 1683157 3516.63 1803 1770 478.1
D 12 110 590760 1231.88 1803 1770 478.1

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