ASTROSAT CZTI

Data Quality Report

Orbit 27510

Creation date: 2024-06-27T19:40:48.696922
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/AS1T03_249T01_9000003934_27510cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27510cztM0_level2_quad_clean.evt
Size (bytes)999,982,080145,457,280
Size953.7 MB 138.7 MB
Events in quadrant A6,105,451909,767
Events in quadrant B6,541,866906,072
Events in quadrant C6,121,743870,598
Events in quadrant D10,653,333836,881

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262540
B0275390
C0262000
D0402660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127591110.869974%
B127601461.144201%
C127601661.300940%
D1276011058.659875%

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 14069 12759 8 8 0.06% 0.06%
B 14070 12760 22 22 0.16% 0.17%
C 14070 12760 5 5 0.04% 0.04%
D 14070 12760 871 871 6.19% 6.83%

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 4 2 58062 178.89 1568 1530 316.0
A 13 254 21262 62.44 1568 1530 316.0
A 3 137 15418 43.95 1568 1530 316.0
B 3 64 236392 786.12 1550 1510 298.8
B 15 32 122696 405.59 1550 1510 298.8
B 0 230 40050 128.99 1550 1510 298.8
C 14 238 239194 670.63 1498 1503 354.4
C 2 16 52072 142.68 1498 1503 354.4
C 13 61 10140 24.37 1498 1503 354.4
D 1 52 2295251 6477.79 1475 1435 354.1
D 7 80 2045873 5773.54 1475 1435 354.1
D 2 250 317897 893.7 1475 1435 354.1

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