ASTROSAT CZTI

Data Quality Report

Orbit 36227

Creation date: 2022-06-10T21:09:56.858201
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/AS1A11_080T02_9000005176_36227cztM0_level2.evt modeM0/AS1A11_080T02_9000005176_36227cztM0_level2_quad_clean.evt
Size (bytes)578,868,48070,513,920
Size552.1 MB 67.2 MB
Events in quadrant A2,750,566474,146
Events in quadrant B4,845,128444,220
Events in quadrant C3,078,332461,746
Events in quadrant D6,484,295369,042

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118343
B0180442
C0125332
D0229762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5505180.326975%
B550559110.735695%
C5505981.780200%
D5505131923.960036%

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 7147 5506 6 6 0.08% 0.11%
B 7147 5506 449 449 6.28% 8.15%
C 7147 5506 65 65 0.91% 1.18%
D 7147 5506 1196 1196 16.73% 21.72%

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 200476 1567.14 628 616 127.5
A 15 223 56714 439.87 628 616 127.5
A 9 143 32695 251.54 628 616 127.5
B 5 236 1080875 9374.75 603 587 115.2
B 5 255 552909 4793.05 603 587 115.2
B 0 213 364147 3154.98 603 587 115.2
C 0 10 442945 3078.73 613 616 143.7
C 15 214 232849 1616.4 613 616 143.7
C 12 250 8312 53.57 613 616 143.7
D 12 227 3185026 23373.81 555 537 136.2
D 12 235 558321 4094.08 555 537 136.2
D 12 6 223783 1638.6 555 537 136.2

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