ASTROSAT CZTI

Data Quality Report

Orbit 11177

Creation date: 2024-06-27T16:09:24.515605
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/AS1A04_049T01_9000001632_11177cztM0_level2.evt modeM0/AS1A04_049T01_9000001632_11177cztM0_level2_quad_clean.evt
Size (bytes)675,046,08083,687,040
Size643.8 MB 79.8 MB
Events in quadrant A4,344,561506,304
Events in quadrant B5,315,431511,877
Events in quadrant C3,188,738532,649
Events in quadrant D7,110,773484,252

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176913
B0205354
C0146662
D0260154

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71662803.907340%
B71655808.094906%
C7166791.102428%
D716584811.835311%

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 7716 7167 106 106 1.37% 1.48%
B 7716 7167 229 229 2.97% 3.20%
C 7716 7167 1 1 0.01% 0.01%
D 7716 7167 654 654 8.48% 9.13%

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 14 238 666409 3974.56 821 802 167.5
A 8 5 325368 1938.09 821 802 167.5
A 8 15 131556 780.78 821 802 167.5
B 4 239 1538862 9837.52 817 796 156.3
B 10 16 164886 1049.52 817 796 156.3
B 15 204 136327 866.86 817 796 156.3
C 14 234 8718 41.86 814 816 188.8
C 13 61 6055 27.75 814 816 188.8
C 12 4 4576 19.92 814 816 188.8
D 13 152 1403669 7600.99 768 744 184.6
D 10 253 1189102 6438.47 768 744 184.6
D 2 136 635928 3441.4 768 744 184.6

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