ASTROSAT CZTI

Data Quality Report

Orbit 41926

Creation date: 2024-06-27T22:34:34.539267
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_118T01_9000005718_41926cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41926cztM0_level2_quad_clean.evt
Size (bytes)471,340,80047,917,440
Size449.5 MB 45.7 MB
Events in quadrant A2,721,230399,761
Events in quadrant B2,279,794411,483
Events in quadrant C2,368,324381,973
Events in quadrant D9,798,2323,726

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103110
B091190
C091840
D0313510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35861664.629113%
B35871243.456928%
C35871774.934486%
D3587356199.275160%

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 3586 3586 115 115 3.21% 3.21%
B 3587 3587 99 99 2.76% 2.76%
C 3587 3587 179 179 4.99% 4.99%
D 3587 3587 3477 3477 96.93% 96.93%

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 24 783077 9771.02 386 379 80.1
A 10 83 344307 4293.52 386 379 80.1
A 14 250 81567 1013.53 386 379 80.1
B 5 255 322250 4363.61 383 373 73.8
B 0 229 266133 3602.85 383 373 73.8
B 0 190 69333 934.87 383 373 73.8
C 14 254 355701 4100.81 371 372 86.6
C 0 10 307558 3545.19 371 372 86.6
C 15 214 144206 1659.97 371 372 86.6
D 12 79 8892080 335033.98 101 98 26.5
D 13 249 187649 7066.59 101 98 26.5
D 1 52 101128 3806.63 101 98 26.5

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