ASTROSAT CZTI

Data Quality Report

Orbit 24755

Creation date: 2024-06-27T19:09:31.273244
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/AS1A07_018T08_9000003622_24755cztM0_level2.evt modeM0/AS1A07_018T08_9000003622_24755cztM0_level2_quad_clean.evt
Size (bytes)499,095,36075,142,080
Size476.0 MB 71.7 MB
Events in quadrant A3,352,473458,082
Events in quadrant B3,487,770460,603
Events in quadrant C3,907,037440,588
Events in quadrant D3,897,746433,694

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141611
B0145901
C0159231
D0159471

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6923791.141124%
B6924821.184287%
C69241742.512998%
D69241642.368573%

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 7568 6924 0 0 0.00% 0.00%
B 7569 6925 2 2 0.03% 0.03%
C 7569 6925 45 45 0.59% 0.65%
D 7569 6925 78 78 1.03% 1.13%

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 13 254 11987 63.18 869 850 176.3
A 3 137 8029 40.73 869 850 176.3
A 0 226 7239 36.25 869 850 176.3
B 0 189 60758 361.46 856 834 165.8
B 0 190 33892 199.4 856 834 165.8
B 3 64 25993 151.76 856 834 165.8
C 7 247 375077 1951.08 819 824 191.8
C 2 16 209948 1090.22 819 824 191.8
C 14 238 131002 678.65 819 824 191.8
D 8 195 238187 1168.59 834 807 203.1
D 10 70 227651 1116.72 834 807 203.1
D 1 52 142646 698.26 834 807 203.1

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