ASTROSAT CZTI

Data Quality Report

Orbit 04970

Creation date: 2024-06-27T14:49:32.990169
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/AS1G05_158T01_9000000630_04970cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04970cztM0_level2_quad_clean.evt
Size (bytes)541,368,00095,515,200
Size516.3 MB 91.1 MB
Events in quadrant A3,576,713598,292
Events in quadrant B3,911,347597,981
Events in quadrant C3,429,153598,417
Events in quadrant D4,954,701561,497

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161323
B0169022
C0157942
D0202852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7713360.466744%
B7713971.257617%
C771390.116686%
D77133003.889537%

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 8213 7715 11 11 0.13% 0.14%
B 8213 7715 23 23 0.28% 0.30%
C 8213 7715 0 0 0.00% 0.00%
D 8213 7715 216 216 2.63% 2.80%

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 0 50 67776 362.92 897 877 184.3
A 13 251 42930 228.13 897 877 184.3
A 15 234 10595 52.72 897 877 184.3
B 15 204 226234 1288.0 905 882 175.0
B 14 167 108832 616.99 905 882 175.0
B 15 54 19861 108.47 905 882 175.0
C 8 128 16981 79.54 866 871 202.5
C 8 112 8319 36.77 866 871 202.5
C 1 16 7730 33.87 866 871 202.5
D 2 136 458232 2151.02 856 829 212.6
D 2 33 373318 1751.7 856 829 212.6
D 13 239 244259 1144.78 856 829 212.6

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