ASTROSAT CZTI

Data Quality Report

Orbit 17588

Creation date: 2024-06-27T17:38:19.630564
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/AS1A05_056T01_9000002604_17588cztM0_level2.evt modeM0/AS1A05_056T01_9000002604_17588cztM0_level2_quad_clean.evt
Size (bytes)529,211,52088,539,840
Size504.7 MB 84.4 MB
Events in quadrant A4,141,860560,137
Events in quadrant B3,568,977567,191
Events in quadrant C4,335,450539,698
Events in quadrant D3,519,839540,137

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165812
B0146502
C0174952
D0147472

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68022663.910615%
B68022493.660688%
C68023244.763305%
D68021972.896207%

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 9157 6802 22 22 0.24% 0.32%
B 9157 6802 0 0 0.00% 0.00%
C 9157 6802 0 0 0.00% 0.00%
D 9157 6802 9 9 0.10% 0.13%

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 14 237 633829 3434.77 913 895 184.3
A 0 226 7790 37.42 913 895 184.3
A 3 137 6810 32.1 913 895 184.3
B 12 111 21207 116.63 909 887 174.2
B 11 111 18331 100.12 909 887 174.2
B 14 111 16118 87.42 909 887 174.2
C 3 233 775742 3827.41 874 881 202.5
C 14 238 134750 661.24 874 881 202.5
C 5 218 17860 83.87 874 881 202.5
D 5 222 61585 278.24 896 869 218.2
D 13 189 22673 99.92 896 869 218.2
D 2 234 21189 93.12 896 869 218.2

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