ASTROSAT CZTI

Data Quality Report

Orbit 09868

Creation date: 2024-06-27T15:51:37.366990
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/AS1A03_117T06_9000001404_09868cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09868cztM0_level2_quad_clean.evt
Size (bytes)520,378,56097,032,960
Size496.3 MB 92.5 MB
Events in quadrant A3,301,038617,208
Events in quadrant B3,466,713638,215
Events in quadrant C5,071,648606,191
Events in quadrant D3,447,992592,348

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0211
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014771184
B015167191
C020147425
D015444226

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01464
C01464
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6965831.191673%
B69661241.780075%
C69291852.669938%
D69571301.868622%

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 9129 7049 0 0 0.00% 0.00%
B 9128 7043 7 7 0.08% 0.10%
C 9125 7025 145 145 1.59% 2.06%
D 9129 7047 37 37 0.41% 0.53%

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 0 226 7844 39.97 856 837 175.3
A 13 251 6983 35.06 856 837 175.3
A 12 194 6730 33.62 856 837 175.3
B 4 81 117769 705.59 860 838 165.7
B 12 111 19304 111.43 860 838 165.7
B 11 111 16115 92.18 860 838 165.7
C 4 254 1788826 9219.05 834 841 193.9
C 14 234 13533 65.44 834 841 193.9
C 9 54 6408 28.7 834 841 193.9
D 1 52 187259 863.55 829 813 215.9
D 10 172 59709 272.78 829 813 215.9
D 2 234 28386 127.71 829 813 215.9

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