ASTROSAT CZTI

Data Quality Report

Orbit 39406

Creation date: 2024-06-27T22:04:09.525146
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_9000005470_39406cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39406cztM0_level2_quad_clean.evt
Size (bytes)852,753,600142,692,480
Size813.2 MB 136.1 MB
Events in quadrant A4,804,1491,052,369
Events in quadrant B4,140,2321,086,699
Events in quadrant C4,720,9511,008,380
Events in quadrant D17,187,579534,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01860
B01860
C01860
D01860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0198302
B0187731
C0201951
D0574851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9207540.586510%
B9207130.141197%
C9207460.499620%
D9207436247.376996%

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 13212 9209 41 41 0.31% 0.45%
B 13212 9209 4 4 0.03% 0.04%
C 13212 9209 44 44 0.33% 0.48%
D 13212 9209 4057 4057 30.71% 44.05%

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 10 83 618968 3048.6 1006 988 202.7
A 13 248 200453 983.99 1006 988 202.7
A 15 174 52115 252.22 1006 988 202.7
B 5 172 109170 574.42 999 973 188.4
B 5 255 30131 154.8 999 973 188.4
B 4 170 29221 149.97 999 973 188.4
C 9 187 502153 2244.12 963 970 223.3
C 15 214 382523 1708.46 963 970 223.3
C 14 254 47584 208.72 963 970 223.3
D 12 235 12365915 63692.0 796 771 194.1
D 12 227 959576 4938.74 796 771 194.1
D 13 249 307682 1580.88 796 771 194.1

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