ASTROSAT CZTI

Data Quality Report

Orbit 27478

Creation date: 2024-06-27T19:40:29.343293
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/AS1T03_249T01_9000003934_27478cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27478cztM0_level2_quad_clean.evt
Size (bytes)551,076,48083,761,920
Size525.5 MB 79.9 MB
Events in quadrant A3,567,921517,877
Events in quadrant B3,617,899518,899
Events in quadrant C3,570,187495,366
Events in quadrant D5,429,782487,640

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152650
B0153250
C0152650
D0211300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74141261.699487%
B74151271.712744%
C74151672.252192%
D74153304.450438%

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 7649 7415 2 2 0.03% 0.03%
B 7650 7416 2 2 0.03% 0.03%
C 7650 7415 0 0 0.00% 0.00%
D 7649 7414 177 177 2.31% 2.39%

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 12769 63.4 922 902 187.2
A 3 137 8972 43.11 922 902 187.2
A 0 226 7757 36.62 922 902 187.2
B 0 230 25806 141.7 908 885 175.9
B 12 111 21916 119.58 908 885 175.9
B 11 111 19903 108.14 908 885 175.9
C 14 238 138875 668.08 878 881 206.6
C 13 61 6023 24.89 878 881 206.6
C 2 16 5149 20.66 878 881 206.6
D 1 52 1646815 7720.86 885 858 213.2
D 12 33 151834 708.2 885 858 213.2
D 14 35 105068 488.83 885 858 213.2

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