ASTROSAT CZTI

Data Quality Report

Orbit 18032

Creation date: 2024-06-27T17:44:06.093406
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_159T01_9000002678_18032cztM0_level2.evt modeM0/AS1A05_159T01_9000002678_18032cztM0_level2_quad_clean.evt
Size (bytes)506,885,76087,609,600
Size483.4 MB 83.6 MB
Events in quadrant A3,618,280560,878
Events in quadrant B3,581,011566,289
Events in quadrant C3,637,059536,811
Events in quadrant D4,063,665525,887

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147132
B0145882
C0147522
D0162822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66481342.015644%
B66491422.135659%
C66491281.925102%
D66491602.406377%

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 8753 6649 24 24 0.27% 0.36%
B 8754 6650 9 9 0.10% 0.14%
C 8754 6651 1 1 0.01% 0.02%
D 8754 6651 50 50 0.57% 0.75%

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 15 174 189502 1049.48 891 877 179.7
A 0 226 7770 38.35 891 877 179.7
A 3 137 6463 31.08 891 877 179.7
B 7 220 63890 367.68 891 873 171.4
B 12 111 19504 108.7 891 873 171.4
B 11 111 17219 95.37 891 873 171.4
C 3 233 169708 857.72 841 848 196.9
C 14 238 132738 669.93 841 848 196.9
C 8 208 34636 171.63 841 848 196.9
D 7 238 499340 2385.38 853 830 209.0
D 11 176 147197 700.37 853 830 209.0
D 5 222 95170 451.42 853 830 209.0

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