ASTROSAT CZTI

Data Quality Report

Orbit 30087

Creation date: 2024-06-27T20:10:52.482514
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/AS1A10_071T10_9000004328_30087cztM0_level2.evt modeM0/AS1A10_071T10_9000004328_30087cztM0_level2_quad_clean.evt
Size (bytes)140,912,64027,184,320
Size134.4 MB 25.9 MB
Events in quadrant A700,077189,874
Events in quadrant B1,076,573189,739
Events in quadrant C740,436181,236
Events in quadrant D1,648,369153,033

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029590
B044600
C030000
D058350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A146720.136333%
B1468151.021798%
C1468100.681199%
D146840027.247956%

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 1467 1467 0 0 0.00% 0.00%
B 1468 1468 7 7 0.48% 0.48%
C 1468 1468 0 0 0.00% 0.00%
D 1468 1468 276 276 18.80% 18.80%

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 13 254 2780 66.65 181 176 39.1
A 3 137 1873 43.44 181 176 39.1
A 0 226 1540 34.91 181 176 39.1
B 6 159 342577 9453.63 176 171 36.2
B 4 171 38266 1051.78 176 171 36.2
B 12 111 4190 110.96 176 171 36.2
C 3 233 29152 676.83 174 175 42.8
C 14 238 28004 650.01 174 175 42.8
C 2 114 3486 77.34 174 175 42.8
D 13 104 982754 23385.09 154 151 42.0
D 2 250 28056 664.11 154 151 42.0
D 8 195 26972 638.32 154 151 42.0

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