ASTROSAT CZTI

Data Quality Report

Orbit 24318

Creation date: 2024-06-27T19:04:42.481180
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/AS1A07_145T01_9000003594_24318cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24318cztM0_level2_quad_clean.evt
Size (bytes)512,182,080100,454,400
Size488.5 MB 95.8 MB
Events in quadrant A3,105,140660,025
Events in quadrant B3,208,212690,359
Events in quadrant C4,694,403645,349
Events in quadrant D4,087,480617,745

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130322
B0131892
C0187412
D0162162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6145280.455655%
B6145340.553295%
C61452073.368592%
D61452123.449959%

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 7525 6146 0 0 0.00% 0.00%
B 7525 6146 2 2 0.03% 0.03%
C 7525 6145 27 27 0.36% 0.44%
D 7525 6145 181 181 2.41% 2.95%

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 3 1 37997 235.58 796 781 158.0
A 13 254 10032 58.56 796 781 158.0
A 0 226 6810 38.16 796 781 158.0
B 0 230 21530 137.12 805 787 151.3
B 0 219 19137 121.3 805 787 151.3
B 12 111 17741 112.08 805 787 151.3
C 7 247 1341022 7567.84 767 772 177.1
C 2 16 225914 1271.28 767 772 177.1
C 14 238 125474 704.14 767 772 177.1
D 12 218 811228 4433.23 760 740 182.8
D 1 52 321568 1754.87 760 740 182.8
D 12 233 66151 357.79 760 740 182.8

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