ASTROSAT CZTI

Data Quality Report

Orbit 19800

Creation date: 2024-06-27T18:07:09.516048
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_117T01_9000002958_19800cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19800cztM0_level2_quad_clean.evt
Size (bytes)683,688,96094,582,080
Size652.0 MB 90.2 MB
Events in quadrant A4,309,593636,259
Events in quadrant B3,413,349650,907
Events in quadrant C4,067,035611,404
Events in quadrant D8,494,750530,843

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168362
B0139412
C0165352
D0294482

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62193405.467117%
B6219801.286380%
C62191522.444123%
D6219194331.242965%

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 7534 6219 197 197 2.61% 3.17%
B 7534 6219 5 5 0.07% 0.08%
C 7534 6220 31 31 0.41% 0.50%
D 7534 6219 1673 1673 22.21% 26.90%

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 6 16 1053782 6380.25 829 814 165.0
A 4 2 58386 348.85 829 814 165.0
A 0 226 7455 40.24 829 814 165.0
B 0 198 76750 488.86 841 824 155.3
B 7 220 29351 183.67 841 824 155.3
B 12 111 18073 111.06 841 824 155.3
C 3 233 786087 4206.11 808 817 186.7
C 14 238 128739 685.18 808 817 186.7
C 13 61 5730 26.32 808 817 186.7
D 7 238 3130363 18626.34 704 687 168.0
D 1 52 2341441 13931.05 704 687 168.0
D 12 218 137318 813.16 704 687 168.0

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