ASTROSAT CZTI

Data Quality Report

Orbit 14760

Creation date: 2024-06-27T16:59:22.396707
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/AS1A04_022T06_9000002182_14760cztM0_level2.evt modeM0/AS1A04_022T06_9000002182_14760cztM0_level2_quad_clean.evt
Size (bytes)1,423,304,640204,114,240
Size1.3 GB 194.7 MB
Events in quadrant A16,994,8821,251,199
Events in quadrant B8,397,9291,305,451
Events in quadrant C8,831,4561,275,053
Events in quadrant D7,815,5981,259,543

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0611264
B0349343
C0357563
D0342553

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15788213313.510261%
B158133582.263960%
C158131611.018150%
D158131370.866376%

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 18949 15792 1655 1655 8.73% 10.48%
B 18949 15817 183 183 0.97% 1.16%
C 18948 15816 51 51 0.27% 0.32%
D 18949 15817 51 51 0.27% 0.32%

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 8 15 9494625 25432.8 1854 1817 373.3
A 12 189 285907 761.12 1854 1817 373.3
A 0 23 65291 170.06 1854 1817 373.3
B 10 16 525538 1472.5 1884 1837 355.7
B 4 142 142619 395.84 1884 1837 355.7
B 0 205 106063 293.05 1884 1837 355.7
C 3 233 1275607 3045.29 1823 1831 418.3
C 4 254 427065 1016.63 1823 1831 418.3
C 13 61 13219 27.23 1823 1831 418.3
D 5 222 592660 1233.16 1830 1782 479.2
D 2 234 71863 146.26 1830 1782 479.2
D 2 152 58243 117.83 1830 1782 479.2

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