ASTROSAT CZTI

Data Quality Report

Orbit 43665

Creation date: 2024-06-27T22:54:16.316007
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/AS1A12_018T01_9000005896_43665cztM0_level2.fits modeM0/AS1A12_018T01_9000005896_43665cztM0_level2_quad_clean.evt
Size (bytes)951,482,88097,395,840
Size907.4 MB 92.9 MB
Events in quadrant A8,350,851746,285
Events in quadrant B3,712,842761,341
Events in quadrant C14,587,965383,429
Events in quadrant D8,054,324589,235

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295271
B0156851
C0477991
D0286053

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66763294.928101%
B6677841.258050%
C6677478971.723828%
D6676138020.671061%

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 7471 6678 107 107 1.43% 1.60%
B 7472 6679 18 18 0.24% 0.27%
C 7472 6679 4390 4390 58.75% 65.73%
D 7471 6678 1124 1124 15.04% 16.83%

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 15 222 4063634 27183.45 730 715 149.5
A 10 83 910387 6086.27 730 715 149.5
A 15 223 180729 1204.41 730 715 149.5
B 4 206 213289 1495.84 738 716 142.1
B 0 230 176285 1235.45 738 716 142.1
B 5 235 143769 1006.64 738 716 142.1
C 15 142 11228606 119000.13 400 403 94.4
C 15 158 1120708 11873.35 400 403 94.4
C 15 126 242106 2561.65 400 403 94.4
D 7 80 1434448 8398.21 659 639 170.7
D 12 6 941337 5509.92 659 639 170.7
D 1 52 477793 2794.82 659 639 170.7

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