ASTROSAT CZTI

Data Quality Report

Orbit 17980

Creation date: 2024-06-27T17:43:25.986858
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_108T02_9000002676_17980cztM0_level2.evt modeM0/AS1A05_108T02_9000002676_17980cztM0_level2_quad_clean.evt
Size (bytes)548,700,48095,973,120
Size523.3 MB 91.5 MB
Events in quadrant A4,446,488596,850
Events in quadrant B3,598,856621,150
Events in quadrant C3,595,978599,273
Events in quadrant D4,490,613590,830

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180142
B0154412
C0152682
D0183442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71532884.026283%
B71541091.523623%
C71531171.635677%
D71532994.180064%

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 9083 7155 153 153 1.68% 2.14%
B 9084 7156 6 6 0.07% 0.08%
C 9083 7155 0 0 0.00% 0.00%
D 9083 7154 159 159 1.75% 2.22%

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 14 237 1072218 6091.62 870 849 175.9
A 15 174 31155 172.31 870 849 175.9
A 0 226 7664 38.75 870 849 175.9
B 0 197 51060 296.0 882 859 169.6
B 0 189 20310 114.69 882 859 169.6
B 12 111 19868 112.08 882 859 169.6
C 3 233 153586 763.52 849 854 200.0
C 14 238 129382 642.52 849 854 200.0
C 13 61 6048 25.97 849 854 200.0
D 5 222 620318 2854.45 841 820 217.0
D 11 176 339378 1559.97 841 820 217.0
D 7 238 258580 1187.68 841 820 217.0

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