ASTROSAT CZTI

Data Quality Report

Orbit 02954

Creation date: 2024-06-27T14:22:40.575080
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/AS1G05_238T04_9000000416_02954cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02954cztM0_level2_common_clean.evt
Size (bytes)379,929,60072,763,200
Size362.3 MB 69.4 MB
Events in quadrant A2,780,878466,597
Events in quadrant B2,641,912463,651
Events in quadrant C2,785,024464,909
Events in quadrant D2,953,026453,406

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117453
B0113722
C0118882
D0123212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5083791.554200%
B5083611.200079%
C5083631.239426%
D5083911.790281%

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 7209 5084 59 59 0.82% 1.16%
B 7209 5084 44 44 0.61% 0.87%
C 7209 5084 50 50 0.69% 0.98%
D 7209 5084 82 82 1.14% 1.61%

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 14 238 494403 4491.91 547 535 109.9
A 14 249 54755 493.15 547 535 109.9
A 0 31 42003 377.16 547 535 109.9
B 2 249 229256 2153.39 557 545 106.2
B 3 27 64396 601.18 557 545 106.2
B 0 205 45218 420.61 557 545 106.2
C 1 192 515465 4090.08 542 546 125.9
C 6 80 80223 632.89 542 546 125.9
C 10 21 17567 135.2 542 546 125.9
D 1 31 271347 2105.42 536 523 128.6
D 15 35 166608 1291.16 536 523 128.6
D 14 81 83821 647.57 536 523 128.6

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
Veto Counter