ASTROSAT CZTI

Data Quality Report

Orbit 12639

Creation date: 2024-06-27T16:30:22.290187
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/AS1G08_071T01_9000001874_12639cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12639cztM0_level2_quad_clean.evt
Size (bytes)538,053,12098,568,000
Size513.1 MB 94.0 MB
Events in quadrant A3,432,433620,806
Events in quadrant B4,575,788616,473
Events in quadrant C3,455,933633,487
Events in quadrant D4,328,797599,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154733
B0186042
C0156022
D0179832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7399610.824436%
B73993584.838492%
C7399430.581160%
D7399991.338019%

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 9045 7401 0 0 0.00% 0.00%
B 9045 7400 157 157 1.74% 2.12%
C 9045 7401 7 7 0.08% 0.09%
D 9045 7401 70 70 0.77% 0.95%

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 8 15 87765 486.91 867 848 178.5
A 0 226 7745 38.64 867 848 178.5
A 12 194 6727 32.93 867 848 178.5
B 4 239 872260 5316.24 858 838 163.9
B 11 51 176631 1072.45 858 838 163.9
B 4 81 89708 542.16 858 838 163.9
C 15 208 88706 441.83 855 859 198.8
C 14 234 32227 157.77 855 859 198.8
C 13 61 6191 26.82 855 859 198.8
D 10 157 760552 3741.0 840 814 203.1
D 1 52 156465 766.43 840 814 203.1
D 8 195 89098 434.72 840 814 203.1

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