ASTROSAT CZTI

Data Quality Report

Orbit 17682

Creation date: 2024-06-27T17:39:27.109316
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/AS1A05_208T01_9000002614_17682cztM0_level2.evt modeM0/AS1A05_208T01_9000002614_17682cztM0_level2_quad_clean.evt
Size (bytes)613,503,36087,563,520
Size585.1 MB 83.5 MB
Events in quadrant A4,105,780516,099
Events in quadrant B4,603,619522,388
Events in quadrant C4,700,009503,938
Events in quadrant D4,576,802501,253

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179891
B0192261
C0193421
D0196551

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8752901.028336%
B87521701.942413%
C87531451.656575%
D87531401.599452%

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 9157 8752 0 0 0.00% 0.00%
B 9157 8752 47 47 0.51% 0.54%
C 9158 8753 1 1 0.01% 0.01%
D 9158 8753 40 40 0.44% 0.46%

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 14 237 107650 499.59 1039 1013 213.4
A 0 226 9013 37.48 1039 1013 213.4
A 3 137 7973 32.61 1039 1013 213.4
B 7 220 231134 1162.63 1033 1007 197.9
B 10 245 178818 898.32 1033 1007 197.9
B 0 189 41537 204.76 1033 1007 197.9
C 3 233 600679 2542.14 999 1007 235.9
C 14 238 151807 639.28 999 1007 235.9
C 5 218 27663 113.0 999 1007 235.9
D 7 238 537107 2159.53 1016 989 248.3
D 1 52 133122 532.24 1016 989 248.3
D 2 234 42110 165.64 1016 989 248.3

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