ASTROSAT CZTI

Data Quality Report

Orbit 28471

Creation date: 2024-06-27T19:52:04.878772
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_28471cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28471cztM0_level2_quad_clean.evt
Size (bytes)576,123,840131,448,960
Size549.4 MB 125.4 MB
Events in quadrant A4,257,890904,150
Events in quadrant B3,321,182928,291
Events in quadrant C3,225,012900,725
Events in quadrant D6,237,113828,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166060
B0137430
C0133620
D0227070

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60142734.539408%
B6015971.612635%
C60141101.829066%
D6014103717.243099%

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 7289 6014 190 190 2.61% 3.16%
B 7290 6015 28 28 0.38% 0.47%
C 7289 6014 0 0 0.00% 0.00%
D 7289 6014 967 967 13.27% 16.08%

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 15 174 1233815 7993.62 781 766 154.3
A 6 16 9535 56.85 781 766 154.3
A 13 254 9209 54.73 781 766 154.3
B 10 245 237706 1635.62 778 758 144.9
B 0 230 29398 197.7 778 758 144.9
B 12 111 17016 112.23 778 758 144.9
C 14 238 127545 719.12 771 779 176.3
C 7 247 42408 236.15 771 779 176.3
C 15 208 28776 158.82 771 779 176.3
D 1 52 1869510 10626.26 746 728 175.9
D 8 195 1381644 7852.16 746 728 175.9
D 12 233 66776 375.56 746 728 175.9

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