ASTROSAT CZTI

Data Quality Report

Orbit 22892

Creation date: 2024-06-27T18:47:10.090334
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/AS1A08_009T01_9000003382_22892cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22892cztM0_level2_quad_clean.evt
Size (bytes)336,525,12064,555,200
Size320.9 MB 61.6 MB
Events in quadrant A2,195,712410,227
Events in quadrant B2,280,010412,906
Events in quadrant C2,217,191397,832
Events in quadrant D3,163,846388,932

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099441
B0101081
C099661
D0127212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4914280.569801%
B4915440.895219%
C4915440.895219%
D4914731.485551%

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 4914 4914 1 1 0.02% 0.02%
B 4915 4915 4 4 0.08% 0.08%
C 4915 4915 0 0 0.00% 0.00%
D 4914 4914 36 36 0.73% 0.73%

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 8554 69.54 566 553 115.1
A 13 252 5550 43.43 566 553 115.1
A 0 226 4958 38.29 566 553 115.1
B 10 247 30710 276.5 563 549 109.1
B 0 189 14794 130.59 563 549 109.1
B 12 111 13024 114.36 563 549 109.1
C 14 238 85555 664.46 541 544 127.9
C 8 128 10004 73.94 541 544 127.9
C 7 247 6609 47.41 541 544 127.9
D 7 238 614614 4631.52 547 530 132.6
D 13 153 168231 1264.83 547 530 132.6
D 12 233 68667 513.9 547 530 132.6

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