ASTROSAT CZTI

Data Quality Report

Orbit 39186

Creation date: 2024-06-27T22:01:31.861206
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/AS1A12_054T02_9000005444_39186cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39186cztM0_level2_quad_clean.evt
Size (bytes)540,708,48084,381,120
Size515.7 MB 80.5 MB
Events in quadrant A3,086,093674,355
Events in quadrant B2,512,834682,870
Events in quadrant C2,776,098630,886
Events in quadrant D11,238,513205,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122683
B0106132
C0111842
D0368812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5161320.620035%
B5161160.310017%
C5161280.542531%
D5161372072.079054%

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 7254 5162 21 21 0.29% 0.41%
B 7254 5162 7 7 0.10% 0.14%
C 7254 5162 27 27 0.37% 0.52%
D 7253 5161 3048 3048 42.02% 59.06%

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 10 83 422634 3393.09 624 614 124.4
A 9 143 142073 1137.35 624 614 124.4
A 13 248 60347 480.26 624 614 124.4
B 5 172 58219 500.58 610 594 115.1
B 0 230 24236 205.37 610 594 115.1
B 0 213 22897 193.74 610 594 115.1
C 9 187 230868 1687.48 594 599 136.5
C 15 214 218896 1599.74 594 599 136.5
C 0 10 6529 43.46 594 599 136.5
D 12 235 9033132 88260.33 422 410 102.3
D 2 249 244343 2383.51 422 410 102.3
D 5 222 135117 1316.25 422 410 102.3

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