ASTROSAT CZTI

Data Quality Report

Orbit 31651

Creation date: 2024-06-27T20:31:25.817214
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_026T01_9000004624_31651cztM0_level2.evt modeM0/AS1T04_026T01_9000004624_31651cztM0_level2_quad_clean.evt
Size (bytes)2,159,046,720229,919,040
Size2.0 GB 219.3 MB
Events in quadrant A26,128,8961,133,743
Events in quadrant B15,131,0681,535,893
Events in quadrant C9,792,1671,512,624
Events in quadrant D13,048,7971,461,167

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0905734
B0594564
C0407104
D0524924

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19124866445.304330%
B191245813.038067%
C191255012.619608%
D191243411.783100%

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 21424 19128 5494 5494 25.64% 28.72%
B 21424 19128 113 113 0.53% 0.59%
C 21425 19129 38 38 0.18% 0.20%
D 21424 19128 115 115 0.54% 0.60%

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 0 13 19245332 54006.53 1777 1738 356.3
A 13 254 25085 65.52 1777 1738 356.3
A 12 96 19200 49.01 1777 1738 356.3
B 6 159 5011795 11199.15 2305 2243 447.3
B 10 245 912454 2034.83 2305 2243 447.3
B 0 190 122057 267.85 2305 2243 447.3
C 0 10 467594 876.52 2246 2265 530.9
C 14 238 365053 683.37 2246 2265 530.9
C 10 22 96456 177.42 2246 2265 530.9
D 8 195 3764712 6923.48 2264 2202 543.4
D 11 176 467723 856.62 2264 2202 543.4
D 2 250 213381 388.6 2264 2202 543.4

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