ASTROSAT CZTI

Data Quality Report

Orbit 17688

Creation date: 2024-06-27T17:39:39.019107
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_186T02_9000002624_17688cztM0_level2.evt modeM0/AS1A05_186T02_9000002624_17688cztM0_level2_quad_clean.evt
Size (bytes)388,238,40070,378,560
Size370.3 MB 67.1 MB
Events in quadrant A2,685,040448,677
Events in quadrant B3,078,734456,469
Events in quadrant C2,769,544433,386
Events in quadrant D2,863,405420,785

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111941
B0125541
C0112621
D0119341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5309250.470898%
B5309961.808250%
C5308611.149209%
D5308901.695554%

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 6624 5310 0 0 0.00% 0.00%
B 6624 5310 36 36 0.54% 0.68%
C 6623 5309 0 0 0.00% 0.00%
D 6623 5309 53 53 0.80% 1.00%

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 14 237 78291 567.54 678 667 136.8
A 0 226 5983 38.87 678 667 136.8
A 12 194 5017 31.8 678 667 136.8
B 10 245 310085 2455.71 672 657 126.0
B 0 189 89425 704.49 672 657 126.0
B 4 142 23226 179.11 672 657 126.0
C 3 233 154518 1026.52 643 647 149.9
C 14 238 101467 672.6 643 647 149.9
C 5 218 7674 46.88 643 647 149.9
D 1 52 286418 1824.1 650 633 156.7
D 10 70 43430 273.16 650 633 156.7
D 12 233 27426 171.01 650 633 156.7

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