ASTROSAT CZTI

Data Quality Report

Orbit 28420

Creation date: 2024-06-27T19:51:35.932602
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/AS1A10_101T21_9000004090_28420cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28420cztM0_level2_quad_clean.evt
Size (bytes)151,156,80029,373,120
Size144.2 MB 28.0 MB
Events in quadrant A726,250198,264
Events in quadrant B801,027203,411
Events in quadrant C1,142,203192,036
Events in quadrant D1,794,615174,797

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033660
B034640
C045580
D064520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164060.365854%
B1640130.792683%
C1640996.036585%
D164031319.085366%

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 1640 1640 0 0 0.00% 0.00%
B 1640 1640 0 0 0.00% 0.00%
C 1640 1640 65 65 3.96% 3.96%
D 1640 1640 294 294 17.93% 17.93%

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 13 254 2553 58.85 187 183 40.3
A 3 137 1991 44.9 187 183 40.3
A 0 226 1619 35.66 187 183 40.3
B 10 245 59538 1546.07 188 183 38.4
B 12 111 4804 120.37 188 183 38.4
B 11 111 4284 106.82 188 183 38.4
C 7 220 420473 9786.52 176 177 42.9
C 14 238 29070 672.77 176 177 42.9
C 3 233 4029 89.69 176 177 42.9
D 1 52 738732 18178.83 164 159 40.6
D 8 195 420321 10341.64 164 159 40.6
D 2 250 6741 162.01 164 159 40.6

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