ASTROSAT CZTI

Data Quality Report

Orbit 39416

Creation date: 2024-06-27T22:04:16.946987
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/AS1T05_074T01_9000005472_39416cztM0_level2.fits modeM0/AS1T05_074T01_9000005472_39416cztM0_level2_quad_clean.evt
Size (bytes)466,243,20084,470,400
Size444.6 MB 80.6 MB
Events in quadrant A3,538,042598,837
Events in quadrant B2,482,802635,102
Events in quadrant C3,606,474585,876
Events in quadrant D7,236,430381,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137822
B0108571
C0139741
D0250861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50841472.891424%
B5084150.295043%
C50841763.461841%
D5084155730.625492%

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 7026 5085 133 133 1.89% 2.62%
B 7026 5085 6 6 0.09% 0.12%
C 7026 5085 164 164 2.33% 3.23%
D 7026 5084 1386 1386 19.73% 27.26%

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 15 222 732695 6402.31 566 556 114.4
A 10 83 419459 3663.17 566 556 114.4
A 13 248 180622 1574.62 566 556 114.4
B 5 172 97471 875.04 576 560 110.7
B 6 203 77544 695.12 576 560 110.7
B 5 255 27079 239.45 576 560 110.7
C 15 208 961807 7330.43 559 564 131.1
C 15 214 212395 1615.42 559 564 131.1
C 9 187 159565 1212.54 559 564 131.1
D 12 235 2910405 26861.82 449 436 108.3
D 12 0 1975968 18236.06 449 436 108.3
D 13 249 416692 3842.44 449 436 108.3

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