ASTROSAT CZTI

Data Quality Report

Orbit 12291

Creation date: 2024-06-27T16:25:01.926365
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/AS1G08_064T01_9000001814_12291cztM0_level2.evt modeM0/AS1G08_064T01_9000001814_12291cztM0_level2_quad_clean.evt
Size (bytes)324,411,84045,849,600
Size309.4 MB 43.7 MB
Events in quadrant A2,217,667276,250
Events in quadrant B3,125,329276,051
Events in quadrant C1,891,933276,142
Events in quadrant D2,304,514264,687

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093211
B0119681
C084941
D097081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4182270.645624%
B418245810.951698%
C418280.191296%
D4182902.152080%

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 4183 4183 4 4 0.10% 0.10%
B 4183 4183 335 335 8.01% 8.01%
C 4183 4183 0 0 0.00% 0.00%
D 4183 4183 73 73 1.75% 1.75%

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 0 23 116397 1148.59 491 482 100.9
A 1 162 65421 643.47 491 482 100.9
A 1 178 35294 344.95 491 482 100.9
B 4 239 1018929 11668.84 455 446 87.3
B 0 85 171928 1964.68 455 446 87.3
B 11 51 58820 668.8 455 446 87.3
C 15 208 12720 109.16 478 481 112.1
C 4 254 8295 69.7 478 481 112.1
C 1 16 6389 52.7 478 481 112.1
D 1 52 169024 1476.71 475 462 114.1
D 5 222 56656 492.29 475 462 114.1
D 10 199 56526 491.16 475 462 114.1

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