ASTROSAT CZTI

Data Quality Report

Orbit 35145

Creation date: 2022-03-29T19:07:41.892837
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_065T05_9000005032_35145cztM0_level2.evt modeM0/AS1A11_065T05_9000005032_35145cztM0_level2_quad_clean.evt
Size (bytes)96,652,80015,085,440
Size92.2 MB 14.4 MB
Events in quadrant A785,965100,448
Events in quadrant B557,321102,608
Events in quadrant C723,06496,277
Events in quadrant D801,13691,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029722
B023071
C028391
D030211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A832819.735577%
B832101.201923%
C8329311.177885%
D832455.408654%

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 832 832 24 24 2.88% 2.88%
B 832 832 3 3 0.36% 0.36%
C 832 832 63 63 7.57% 7.57%
D 832 832 23 23 2.76% 2.76%

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 15 169 255539 9554.24 127 126 26.7
A 10 83 33836 1260.99 127 126 26.7
A 13 6 2645 94.23 127 126 26.7
B 5 172 32136 1229.98 126 123 26.0
B 4 232 14957 569.94 126 123 26.0
B 3 112 9216 349.36 126 123 26.0
C 0 10 222206 7987.78 115 116 27.8
C 15 214 38695 1387.55 115 116 27.8
C 9 187 5816 205.01 115 116 27.8
D 8 195 194442 6223.12 122 119 31.2
D 2 250 95335 3049.25 122 119 31.2
D 13 249 16410 521.71 122 119 31.2

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