ASTROSAT CZTI

Data Quality Report

Orbit 13597

Creation date: 2024-06-27T16:43:15.130518
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_028T01_9000002006_13597cztM0_level2.evt modeM0/AS1G08_028T01_9000002006_13597cztM0_level2_quad_clean.evt
Size (bytes)658,998,72082,840,320
Size628.5 MB 79.0 MB
Events in quadrant A3,594,556510,518
Events in quadrant B4,783,772502,420
Events in quadrant C3,643,286505,266
Events in quadrant D7,437,655477,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152602
B0191301
C0151741
D0273011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7357580.788365%
B73573094.200082%
C7357540.733995%
D7357144719.668343%

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 7763 7359 6 6 0.08% 0.08%
B 7763 7359 115 115 1.48% 1.56%
C 7763 7359 4 4 0.05% 0.05%
D 7763 7359 1229 1229 15.83% 16.70%

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 1 162 47533 251.84 902 885 185.2
A 15 69 25932 135.22 902 885 185.2
A 1 178 14375 72.83 902 885 185.2
B 0 182 663626 3838.48 888 867 172.7
B 0 219 212274 1224.4 888 867 172.7
B 0 189 167273 963.77 888 867 172.7
C 3 233 195665 954.31 872 875 204.1
C 0 207 29311 139.31 872 875 204.1
C 8 128 9602 42.76 872 875 204.1
D 13 122 3373050 17494.39 794 772 192.8
D 5 222 536066 2776.95 794 772 192.8
D 8 195 173756 897.39 794 772 192.8

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