ASTROSAT CZTI

Data Quality Report

Orbit 04972

Creation date: 2024-06-27T14:49:34.140374
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_158T01_9000000630_04972cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04972cztM0_level2_quad_clean.evt
Size (bytes)330,552,00049,291,200
Size315.2 MB 47.0 MB
Events in quadrant A2,225,333291,471
Events in quadrant B2,378,208290,864
Events in quadrant C2,096,617292,590
Events in quadrant D2,976,796273,804

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101802
B0104051
C099281
D0124851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4894220.449530%
B4894621.266857%
C489440.081733%
D48941613.289743%

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 5234 4895 11 11 0.21% 0.22%
B 5234 4895 20 20 0.38% 0.41%
C 5234 4895 0 0 0.00% 0.00%
D 5234 4895 160 160 3.06% 3.27%

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 50 100474 872.73 549 536 114.5
A 15 234 6855 55.18 549 536 114.5
A 12 194 5445 42.87 549 536 114.5
B 15 204 104194 955.85 555 543 108.4
B 14 167 75517 691.4 555 543 108.4
B 0 219 18439 165.03 555 543 108.4
C 9 54 7018 51.12 534 535 126.8
C 13 61 4347 30.06 534 535 126.8
C 1 16 2800 17.86 534 535 126.8
D 2 33 215143 1637.75 526 508 131.1
D 2 136 212854 1620.29 526 508 131.1
D 13 239 175857 1337.98 526 508 131.1

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