ASTROSAT CZTI

Data Quality Report

Orbit 17859

Creation date: 2024-06-27T17:41:44.681840
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/AS1A05_085T01_9000002658_17859cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17859cztM0_level2_quad_clean.evt
Size (bytes)455,941,440100,846,080
Size434.8 MB 96.2 MB
Events in quadrant A3,038,392678,909
Events in quadrant B3,177,054685,754
Events in quadrant C3,000,126644,490
Events in quadrant D4,167,274608,060

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132331
B0134981
C0130071
D0168391

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6255821.310951%
B6256721.150895%
C6256691.102941%
D62563385.402813%

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 7455 6255 27 27 0.36% 0.43%
B 7456 6257 9 9 0.12% 0.14%
C 7456 6257 0 0 0.00% 0.00%
D 7456 6257 276 276 3.70% 4.41%

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 15 174 73518 469.94 771 756 154.8
A 0 226 6848 39.34 771 756 154.8
A 3 137 5654 31.63 771 756 154.8
B 15 222 132924 903.0 774 757 146.4
B 12 111 17207 112.39 774 757 146.4
B 11 111 14675 95.09 774 757 146.4
C 14 238 115334 677.96 728 736 169.0
C 3 233 41087 238.72 728 736 169.0
C 13 61 5141 26.06 728 736 169.0
D 7 238 1118758 6357.02 721 699 175.9
D 1 52 208539 1181.73 721 699 175.9
D 13 232 98136 554.0 721 699 175.9

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