ASTROSAT CZTI

Data Quality Report

Orbit 10874

Creation date: 2024-06-27T16:05:00.510098
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/AS1A03_118T01_9000001570_10874cztM0_level2.evt modeM0/AS1A03_118T01_9000001570_10874cztM0_level2_quad_clean.evt
Size (bytes)205,776,00022,613,760
Size196.2 MB 21.6 MB
Events in quadrant A1,507,536123,760
Events in quadrant B1,842,124108,111
Events in quadrant C1,123,482129,462
Events in quadrant D1,564,840121,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0626
B0620
C0624
D0620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07087635
B090021560
C06059325
D07149467

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2818421.490419%
B27362147.821637%
C285650.175070%
D2823602.125399%

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 3016 2976 30 30 0.99% 1.01%
B 3018 2892 143 143 4.74% 4.94%
C 3017 2995 2 2 0.07% 0.07%
D 3018 2983 60 60 1.99% 2.01%

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 5 274742 4532.3 290 284 60.6
A 8 15 60676 997.29 290 284 60.6
A 15 223 21760 354.65 290 284 60.6
B 4 239 735766 13376.93 279 273 55.0
B 0 214 6962 121.66 279 273 55.0
B 12 111 5537 95.74 279 273 55.0
C 14 234 10641 154.09 285 286 67.2
C 13 61 2175 28.11 285 286 67.2
C 8 222 1170 13.15 285 286 67.2
D 1 52 232861 3393.63 276 266 68.5
D 8 195 93026 1353.4 276 266 68.5
D 2 14 62909 913.98 276 266 68.5

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