ASTROSAT CZTI

Data Quality Report

Orbit 36799

Creation date: 2024-06-27T21:31:50.463122
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/AS1A11_075T01_9000005244_36799cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36799cztM0_level2_quad_clean.evt
Size (bytes)232,459,20034,862,400
Size221.7 MB 33.2 MB
Events in quadrant A888,525245,541
Events in quadrant B3,656,059192,708
Events in quadrant C1,166,808246,890
Events in quadrant D1,193,414227,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466
B0464
C04610
D04610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04733668
B0144682325
C05587854
D05810748

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A199320.100351%
B1903111758.696795%
C1973201.013685%
D19751196.025316%

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 2175 2080 2 2 0.09% 0.10%
B 2117 1990 1093 1093 51.63% 54.92%
C 2169 2055 25 25 1.15% 1.22%
D 2145 2056 116 116 5.41% 5.64%

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 67535 1549.56 209 205 43.5
A 9 143 6800 151.78 209 205 43.5
A 13 6 3677 79.91 209 205 43.5
B 12 1 2784605 80590.79 173 169 34.6
B 5 255 84847 2450.86 173 169 34.6
B 5 172 51258 1478.68 173 169 34.6
C 1 23 142867 2975.25 201 202 48.0
C 0 207 137538 2864.11 201 202 48.0
C 15 214 88310 1837.47 201 202 48.0
D 13 249 376817 7867.42 192 187 47.9
D 2 153 43099 896.39 192 187 47.9
D 2 250 13601 280.2 192 187 47.9

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