ASTROSAT CZTI

Data Quality Report

Orbit 12466

Creation date: 2024-06-27T16:27:47.512229
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_174T01_9000001850_12466cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12466cztM0_level2_quad_clean.evt
Size (bytes)830,027,52093,142,080
Size791.6 MB 88.8 MB
Events in quadrant A11,306,334524,840
Events in quadrant B4,493,328590,103
Events in quadrant C3,911,866588,979
Events in quadrant D4,879,241553,717

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0393303
B0183312
C0169502
D0198442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8093210225.973063%
B80933654.510070%
C80931441.779315%
D80933674.534783%

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 8964 8094 1191 1191 13.29% 14.71%
B 8964 8094 63 63 0.70% 0.78%
C 8964 8096 4 4 0.04% 0.05%
D 8964 8097 204 204 2.28% 2.52%

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 13 251 6854664 35508.05 932 909 193.0
A 0 23 613512 3173.78 932 909 193.0
A 12 189 89649 459.74 932 909 193.0
B 4 239 392032 1979.77 1016 990 197.5
B 0 187 46181 228.79 1016 990 197.5
B 11 51 37087 182.75 1016 990 197.5
C 14 234 23365 95.95 996 1004 233.0
C 13 61 7231 26.72 996 1004 233.0
C 15 208 3247 9.63 996 1004 233.0
D 1 52 894991 3780.86 970 943 236.5
D 7 80 98798 413.82 970 943 236.5
D 7 71 95645 400.49 970 943 236.5

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