ASTROSAT CZTI

Data Quality Report

Orbit 23674

Creation date: 2024-06-27T18:57:27.683884
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/AS1A07_046T01_9000003498_23674cztM0_level2.evt modeM0/AS1A07_046T01_9000003498_23674cztM0_level2_quad_clean.evt
Size (bytes)959,371,200150,978,240
Size914.9 MB 144.0 MB
Events in quadrant A6,283,034926,881
Events in quadrant B7,373,108935,732
Events in quadrant C6,461,572907,459
Events in quadrant D8,043,657889,945

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271043
B0300833
C0274143
D0326993

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A131961521.151864%
B131964173.160048%
C131962391.811155%
D131953983.016294%

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 15031 13196 0 0 0.00% 0.00%
B 15031 13196 177 177 1.18% 1.34%
C 15031 13196 6 6 0.04% 0.05%
D 15030 13195 179 179 1.19% 1.36%

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 24266 68.86 1629 1594 329.2
A 3 137 14381 38.84 1629 1594 329.2
A 0 226 14117 38.04 1629 1594 329.2
B 3 64 818867 2649.87 1608 1570 308.4
B 0 189 99823 318.56 1608 1570 308.4
B 0 230 54878 172.84 1608 1570 308.4
C 14 238 244751 655.18 1566 1576 371.2
C 7 247 101645 269.61 1566 1576 371.2
C 8 208 11141 25.77 1566 1576 371.2
D 12 233 793247 2053.95 1581 1537 385.5
D 1 52 790559 2046.97 1581 1537 385.5
D 12 235 289063 745.93 1581 1537 385.5

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