ASTROSAT CZTI

Data Quality Report

Orbit 11191

Creation date: 2024-06-27T16:09:33.160276
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_171T01_9000001634_11191cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11191cztM0_level2_quad_clean.evt
Size (bytes)547,234,56085,512,960
Size521.9 MB 81.6 MB
Events in quadrant A3,958,648522,970
Events in quadrant B3,632,386538,532
Events in quadrant C3,319,535530,620
Events in quadrant D5,173,737495,655

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01502
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01639118
B01549926
C01487320
D02010825

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71981702.361767%
B71941642.279678%
C71961141.584213%
D71973324.613033%

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 9060 7206 9 9 0.10% 0.12%
B 9060 7206 9 9 0.10% 0.12%
C 9060 7206 0 0 0.00% 0.00%
D 9060 7207 215 215 2.37% 2.98%

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 8 15 327911 1883.1 856 836 173.7
A 8 5 236965 1359.49 856 836 173.7
A 14 238 93643 534.33 856 836 173.7
B 4 239 115817 690.35 866 845 166.5
B 3 189 63487 376.13 866 845 166.5
B 0 198 22761 131.59 866 845 166.5
C 13 61 6314 27.45 851 854 198.9
C 14 234 2093 6.23 851 854 198.9
C 3 202 2054 6.03 851 854 198.9
D 12 157 900738 4501.89 828 803 199.9
D 8 195 571629 2855.53 828 803 199.9
D 2 14 185663 924.75 828 803 199.9

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