ASTROSAT CZTI

Data Quality Report

Orbit 06387

Creation date: 2024-06-27T15:06:37.552835
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/AS1G06_164T01_9000000844_06387cztM0_level2.evt modeM0/AS1G06_164T01_9000000844_06387cztM0_level2_quad_clean.evt
Size (bytes)147,081,60021,744,000
Size140.3 MB 20.7 MB
Events in quadrant A1,195,309131,928
Events in quadrant B1,131,952126,154
Events in quadrant C876,689127,781
Events in quadrant D1,110,967125,618

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0422
D0422

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04885174
B04818139
C04159102
D04829183

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2000190.950000%
B2018673.320119%
C201630.148810%
D2010422.089552%

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 2067 2064 16 16 0.77% 0.78%
B 2067 2064 54 54 2.61% 2.62%
C 2067 2064 1 1 0.05% 0.05%
D 2067 2063 26 26 1.26% 1.26%

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 315060 6638.83 226 220 47.4
A 15 236 4241 84.79 226 220 47.4
A 10 133 2919 56.91 226 220 47.4
B 0 214 167260 3739.65 222 217 44.7
B 4 81 42505 946.72 222 217 44.7
B 4 170 30373 675.11 222 217 44.7
C 4 254 14806 276.19 220 220 52.8
C 13 61 1755 29.07 220 220 52.8
C 1 16 636 7.88 220 220 52.8
D 5 97 156233 2807.32 221 214 55.6
D 2 152 49414 885.27 221 214 55.6
D 2 136 32879 587.75 221 214 55.6

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