ASTROSAT CZTI

Data Quality Report

Orbit 34586

Creation date: 2022-02-20T01:02:01.876414
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/AS1A09_038T44_9000004948_34586cztM0_level2.evt modeM0/AS1A09_038T44_9000004948_34586cztM0_level2_quad_clean.evt
Size (bytes)94,544,64016,873,920
Size90.2 MB 16.1 MB
Events in quadrant A422,521113,707
Events in quadrant B553,986112,049
Events in quadrant C455,165113,188
Events in quadrant D1,365,84299,595

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019192
B022541
C019641
D047231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A92810.107759%
B928242.586207%
C92860.646552%
D92811312.176724%

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 928 928 0 0 0.00% 0.00%
B 928 928 18 18 1.94% 1.94%
C 928 928 5 5 0.54% 0.54%
D 928 928 135 135 14.55% 14.55%

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 20609 908.64 101 99 22.6
A 9 143 5149 223.73 101 99 22.6
A 10 67 1732 72.35 101 99 22.6
B 5 172 67183 3111.84 100 97 21.6
B 0 189 35490 1641.74 100 97 21.6
B 0 245 30194 1396.08 100 97 21.6
C 15 214 43066 1799.12 95 95 23.9
C 0 10 31657 1321.45 95 95 23.9
C 0 207 2128 85.12 95 95 23.9
D 8 195 697470 28991.73 90 88 24.1
D 13 249 92961 3860.94 90 88 24.1
D 10 118 61809 2565.88 90 88 24.1

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