ASTROSAT CZTI

Data Quality Report

Orbit 08599

Creation date: 2024-06-27T15:34:48.183022
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/AS1A03_102T01_9000001202_08599cztM0_level2.evt modeM0/AS1A03_102T01_9000001202_08599cztM0_level2_quad_clean.evt
Size (bytes)1,079,127,360262,995,840
Size1.0 GB 250.8 MB
Events in quadrant A8,214,6901,696,111
Events in quadrant B8,054,8391,770,039
Events in quadrant C7,141,3631,736,257
Events in quadrant D8,164,5521,636,716

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360407
B0349264
C0332104
D0363954

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A163422981.823522%
B163431500.917824%
C16343450.275347%
D163431460.893349%

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 20043 16347 179 179 0.89% 1.10%
B 20043 16347 17 17 0.08% 0.10%
C 20043 16347 0 0 0.00% 0.00%
D 20043 16346 78 78 0.39% 0.48%

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 5 16 434589 1172.03 1848 1809 369.3
A 13 248 416602 1123.32 1848 1809 369.3
A 15 223 173459 464.85 1848 1809 369.3
B 0 214 308433 867.22 1896 1846 353.5
B 0 219 79457 219.53 1896 1846 353.5
B 0 213 65154 179.07 1896 1846 353.5
C 13 61 14025 29.24 1824 1829 417.1
C 12 16 9118 17.47 1824 1829 417.1
C 12 4 7498 13.59 1824 1829 417.1
D 1 52 848203 1949.47 1800 1745 434.2
D 10 253 145518 331.12 1800 1745 434.2
D 7 71 133488 303.42 1800 1745 434.2

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