ASTROSAT CZTI

Data Quality Report

Orbit 11275

Creation date: 2024-06-27T16:10:36.655187
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/AS1A04_044T01_9000001648_11275cztM0_level2.evt modeM0/AS1A04_044T01_9000001648_11275cztM0_level2_quad_clean.evt
Size (bytes)600,710,400100,120,320
Size572.9 MB 95.5 MB
Events in quadrant A4,685,431643,059
Events in quadrant B5,516,947671,278
Events in quadrant C3,233,765651,092
Events in quadrant D4,305,817602,699

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181913
B0209152
C0139182
D0171592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66564747.121394%
B665672210.847356%
C6656310.465745%
D66561702.554087%

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 9236 6658 255 255 2.76% 3.83%
B 9236 6658 323 323 3.50% 4.85%
C 9236 6658 0 0 0.00% 0.00%
D 9236 6658 93 93 1.01% 1.40%

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 14 238 867717 5162.47 829 814 167.9
A 8 5 395010 2347.47 829 814 167.9
A 1 162 69042 406.3 829 814 167.9
B 4 239 1196999 7469.99 837 818 160.1
B 3 64 788838 4921.08 837 818 160.1
B 11 51 118961 737.78 837 818 160.1
C 13 61 6055 27.15 828 835 192.2
C 5 128 2478 8.55 828 835 192.2
C 12 4 2097 6.56 828 835 192.2
D 10 253 318647 1633.63 809 788 194.6
D 1 52 254357 1303.21 809 788 194.6
D 8 195 177646 908.96 809 788 194.6

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