ASTROSAT CZTI

Data Quality Report

Orbit 18094

Creation date: 2024-06-27T17:45:21.479558
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_080T01_9000002686_18094cztM0_level2.evt modeM0/AS1T03_080T01_9000002686_18094cztM0_level2_quad_clean.evt
Size (bytes)447,963,840127,224,000
Size427.2 MB 121.3 MB
Events in quadrant A3,018,271880,219
Events in quadrant B3,141,178873,120
Events in quadrant C3,063,752846,409
Events in quadrant D3,923,833822,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128181
B0131631
C0127301
D0157031

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61681362.204929%
B61681362.204929%
C61681502.431907%
D61683976.436446%

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 7358 6168 0 0 0.00% 0.00%
B 7358 6168 4 4 0.05% 0.06%
C 7358 6169 0 0 0.00% 0.00%
D 7358 6168 185 185 2.51% 3.00%

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 31165 196.6 774 759 154.7
A 15 174 13006 79.19 774 759 154.7
A 0 226 6710 38.48 774 759 154.7
B 0 189 96884 673.77 760 739 142.7
B 3 64 42952 295.82 760 739 142.7
B 12 111 16104 107.68 760 739 142.7
C 14 238 114963 664.26 741 745 171.9
C 3 233 37403 213.19 741 745 171.9
C 0 207 17489 97.38 741 745 171.9
D 11 176 1023157 5702.31 743 720 179.3
D 10 70 27823 151.16 743 720 179.3
D 2 234 27644 150.16 743 720 179.3

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