ASTROSAT CZTI

Data Quality Report

Orbit 04877

Creation date: 2024-06-27T14:48:18.278771
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/AS1G05_009T02_9000000618_04877cztM0_level2.evt modeM0/AS1G05_009T02_9000000618_04877cztM0_level2_quad_clean.evt
Size (bytes)249,730,56024,474,240
Size238.2 MB 23.3 MB
Events in quadrant A1,873,541133,946
Events in quadrant B1,855,602133,211
Events in quadrant C1,444,550129,992
Events in quadrant D2,180,579125,950

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075781
B075611
C063121
D085481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3047812.658352%
B3047441.444043%
C304790.295372%
D30471615.283886%

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 3047 3047 53 53 1.74% 1.74%
B 3047 3047 10 10 0.33% 0.33%
C 3047 3047 0 0 0.00% 0.00%
D 3047 3047 121 121 3.97% 3.97%

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 378786 4811.21 384 377 78.7
A 8 15 6672 80.04 384 377 78.7
A 12 133 4335 50.32 384 377 78.7
B 4 80 182584 2467.01 389 382 73.9
B 4 239 69901 941.29 389 382 73.9
B 15 204 53951 725.32 389 382 73.9
C 13 61 3173 32.77 369 372 85.5
C 14 67 1695 15.48 369 372 85.5
C 8 222 1181 9.46 369 372 85.5
D 2 136 397329 4353.99 365 354 91.2
D 13 235 152189 1665.32 365 354 91.2
D 10 246 101274 1106.88 365 354 91.2

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