ASTROSAT CZTI

Data Quality Report

Orbit 14663

Creation date: 2024-06-27T16:58:10.551539
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/AS1G08_020T01_9000002168_14663cztM0_level2.evt modeM0/AS1G08_020T01_9000002168_14663cztM0_level2_quad_clean.evt
Size (bytes)510,828,480104,610,240
Size487.2 MB 99.8 MB
Events in quadrant A3,513,816683,384
Events in quadrant B3,469,473689,776
Events in quadrant C4,630,269672,691
Events in quadrant D3,418,443671,478

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146533
B0144072
C0189672
D0144082

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64621302.011761%
B64621382.135562%
C64621592.460539%
D64621151.779635%

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 9128 6464 1 1 0.01% 0.02%
B 9128 6463 1 1 0.01% 0.02%
C 9128 6463 3 3 0.03% 0.05%
D 9128 6464 12 12 0.13% 0.19%

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 1 162 44072 246.06 871 854 175.6
A 8 15 43561 243.15 871 854 175.6
A 0 253 30594 169.32 871 854 175.6
B 12 111 18944 109.9 871 851 164.6
B 11 111 15991 91.97 871 851 164.6
B 4 80 15851 91.12 871 851 164.6
C 3 233 1272576 6454.72 858 865 197.0
C 13 61 6146 26.8 858 865 197.0
C 3 234 5485 23.45 858 865 197.0
D 5 222 48558 217.29 860 841 219.6
D 10 70 48336 216.27 860 841 219.6
D 13 172 30621 135.61 860 841 219.6

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