ASTROSAT CZTI

Data Quality Report

Orbit 34684

Creation date: 2022-07-18T18:04:08.199112
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/AS1T04_078T01_9000004962_34684cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34684cztM0_level2_quad_clean.evt
Size (bytes)467,634,24049,345,920
Size446.0 MB 47.1 MB
Events in quadrant A2,557,327299,421
Events in quadrant B3,501,886292,594
Events in quadrant C2,873,937288,688
Events in quadrant D4,905,507277,727

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102373
B0133072
C0112342
D0180442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4768120.251678%
B47682835.935403%
C4768621.300336%
D47683447.214765%

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 6922 4769 5 5 0.07% 0.10%
B 6922 4769 177 177 2.56% 3.71%
C 6922 4769 50 50 0.72% 1.05%
D 6922 4769 322 322 4.65% 6.75%

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 15 169 68478 554.15 614 603 122.5
A 10 83 46608 375.59 614 603 122.5
A 15 174 31400 251.43 614 603 122.5
B 5 172 713475 6362.7 591 577 112.0
B 5 255 207688 1848.49 591 577 112.0
B 4 81 107397 953.38 591 577 112.0
C 15 214 205716 1532.0 580 584 133.9
C 0 10 198979 1481.69 580 584 133.9
C 0 207 137488 1022.45 580 584 133.9
D 8 195 1491341 10487.83 581 567 142.1
D 7 38 786737 5530.83 581 567 142.1
D 2 250 62811 437.9 581 567 142.1

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