ASTROSAT CZTI

Data Quality Report

Orbit 31271

Creation date: 2024-06-27T20:26:00.870543
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/AS1T04_021T01_9000004526_31271cztM0_level2.evt modeM0/AS1T04_021T01_9000004526_31271cztM0_level2_quad_clean.evt
Size (bytes)529,712,64086,448,960
Size505.2 MB 82.4 MB
Events in quadrant A2,909,679569,702
Events in quadrant B5,437,708543,695
Events in quadrant C3,300,716542,373
Events in quadrant D3,981,127536,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126091
B0204061
C0137181
D0159401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6096470.770997%
B60973575.855339%
C60971252.050189%
D6097731.197310%

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 6421 6097 0 0 0.00% 0.00%
B 6422 6098 155 155 2.41% 2.54%
C 6422 6098 4 4 0.06% 0.07%
D 6422 6098 20 20 0.31% 0.33%

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 11992 74.16 753 738 151.8
A 3 137 7735 46.11 753 738 151.8
A 0 226 6422 37.45 753 738 151.8
B 6 159 1728044 12232.81 730 711 141.2
B 5 172 369072 2608.7 730 711 141.2
B 0 190 257811 1820.76 730 711 141.2
C 3 233 306902 1841.85 714 717 166.2
C 14 238 118074 705.96 714 717 166.2
C 0 10 54906 325.97 714 717 166.2
D 8 195 1050366 5514.88 715 701 190.3
D 12 218 60714 315.3 715 701 190.3
D 12 233 50143 259.77 715 701 190.3

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