ASTROSAT CZTI

Data Quality Report

Orbit 27634

Creation date: 2024-06-27T19:42:24.904241
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/AS1T03_257T01_9000003976_27634cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27634cztM0_level2_quad_clean.evt
Size (bytes)507,012,48077,515,200
Size483.5 MB 73.9 MB
Events in quadrant A3,260,776485,463
Events in quadrant B3,682,755503,254
Events in quadrant C3,357,045469,064
Events in quadrant D4,612,703435,281

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135580
B0148100
C0137670
D0180330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6518190.291500%
B6518761.166002%
C6518560.859159%
D65182824.326481%

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 7842 6517 5 5 0.06% 0.08%
B 7842 6517 41 41 0.52% 0.63%
C 7842 6517 2 2 0.03% 0.03%
D 7842 6518 231 231 2.95% 3.54%

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 13 254 11813 66.37 839 824 165.6
A 8 192 10112 56.1 839 824 165.6
A 3 137 7628 41.1 839 824 165.6
B 10 245 299857 1879.46 843 822 159.1
B 3 64 31678 193.93 843 822 159.1
B 12 111 18938 113.86 843 822 159.1
C 14 238 133457 704.57 808 816 188.3
C 2 16 54042 282.73 808 816 188.3
C 3 233 19914 101.45 808 816 188.3
D 1 52 1466253 7732.81 790 768 189.5
D 2 250 114425 599.72 790 768 189.5
D 12 238 25708 131.6 790 768 189.5

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