ASTROSAT CZTI

Data Quality Report

Orbit 22276

Creation date: 2024-06-27T18:38:52.857612
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_9000003296_22276cztM0_level2.evt modeM0/AS1A07_018T08_9000003296_22276cztM0_level2_quad_clean.evt
Size (bytes)452,479,68063,881,280
Size431.5 MB 60.9 MB
Events in quadrant A3,261,413384,462
Events in quadrant B3,331,595396,560
Events in quadrant C3,299,000368,021
Events in quadrant D3,397,169359,168

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131601
B0135041
C0134031
D0138531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100240.393443%
B6100410.672131%
C6100951.557377%
D6100731.196721%

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 7490 6101 0 0 0.00% 0.00%
B 7490 6101 0 0 0.00% 0.00%
C 7490 6101 11 11 0.15% 0.18%
D 7490 6101 55 55 0.73% 0.90%

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 8298 44.53 846 833 167.6
A 0 226 7287 38.5 846 833 167.6
A 3 137 6625 34.55 846 833 167.6
B 12 111 18166 110.04 849 832 157.5
B 11 111 16429 99.02 849 832 157.5
B 14 111 15281 91.73 849 832 157.5
C 14 238 130762 706.03 799 809 184.1
C 10 22 46463 248.04 799 809 184.1
C 0 10 7047 33.89 799 809 184.1
D 1 52 284224 1468.92 802 781 193.0
D 2 136 52376 267.39 802 781 193.0
D 2 234 22631 113.24 802 781 193.0

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