ASTROSAT CZTI

Data Quality Report

Orbit 41854

Creation date: 2024-06-27T22:33:39.616259
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/AS1C07_001T11_9000005710_41854cztM0_level2.fits modeM0/AS1C07_001T11_9000005710_41854cztM0_level2_quad_clean.evt
Size (bytes)361,440,00087,016,320
Size344.7 MB 83.0 MB
Events in quadrant A3,673,247584,161
Events in quadrant B2,368,662601,688
Events in quadrant C3,413,560548,724
Events in quadrant D3,510,642528,073

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142772
B0109032
C0134322
D0142002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53061853.486619%
B530670.131926%
C53062865.390124%
D53051633.072573%

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 7219 5307 127 127 1.76% 2.39%
B 7219 5307 4 4 0.06% 0.08%
C 7219 5307 286 286 3.96% 5.39%
D 7218 5306 169 169 2.34% 3.19%

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 832080 7233.08 566 554 115.0
A 10 83 576337 5008.49 566 554 115.0
A 15 223 54483 469.1 566 554 115.0
B 5 255 76298 698.14 566 552 108.5
B 3 112 25599 230.85 566 552 108.5
B 12 111 13026 114.97 566 552 108.5
C 0 10 1098528 8721.08 538 541 125.9
C 15 214 206760 1637.95 538 541 125.9
C 15 111 7869 58.2 538 541 125.9
D 2 120 443080 3286.64 556 542 134.6
D 13 249 326116 2417.97 556 542 134.6
D 2 249 210021 1555.76 556 542 134.6

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