ASTROSAT CZTI

Data Quality Report

Orbit 37827

Creation date: 2024-06-27T21:45:00.144577
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/AS1C07_001T12_9000005352_37827cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37827cztM0_level2_quad_clean.evt
Size (bytes)148,262,40028,013,760
Size141.4 MB 26.7 MB
Events in quadrant A1,071,204180,121
Events in quadrant B1,124,962179,797
Events in quadrant C1,067,715173,778
Events in quadrant D1,088,298169,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043492
B045891
C043261
D045411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199770.350526%
B1997361.802704%
C1997321.602404%
D1997291.452178%

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 4030 1998 4 4 0.10% 0.20%
B 4030 1997 31 31 0.77% 1.55%
C 4029 1997 25 25 0.62% 1.25%
D 4029 1996 19 19 0.47% 0.95%

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 10 83 154191 3166.79 231 226 48.6
A 13 6 6869 136.64 231 226 48.6
A 12 189 6717 133.51 231 226 48.6
B 4 171 132503 2955.79 230 224 44.8
B 0 229 16560 365.03 230 224 44.8
B 0 230 15569 342.89 230 224 44.8
C 0 10 96720 1822.78 223 225 52.9
C 15 214 85672 1614.08 223 225 52.9
C 15 159 5380 97.38 223 225 52.9
D 2 249 79971 1435.96 224 218 55.5
D 12 233 67956 1219.63 224 218 55.5
D 7 223 15528 275.66 224 218 55.5

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