ASTROSAT CZTI

Data Quality Report

Orbit 01159

Creation date: 2024-06-27T14:08:25.035735
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/AS1P01_997T03_9000000216_01159cztM0_level2.evt modeM0/AS1P01_997T03_9000000216_01159cztM0_level2_quad_clean.evt
Size (bytes)941,587,20092,960,640
Size898.0 MB 88.7 MB
Events in quadrant A7,170,016612,807
Events in quadrant B7,412,559615,360
Events in quadrant C6,965,798587,384
Events in quadrant D6,569,317580,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255922
B0262971
C0249171
D0237521

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5997290.483575%
B5997110.183425%
C599750.083375%
D5997140.233450%

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 7062 5997 200 200 2.83% 3.34%
B 7062 5998 241 241 3.41% 4.02%
C 7062 5997 140 140 1.98% 2.33%
D 7062 5997 144 144 2.04% 2.40%

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 12 243 30684 64.78 1855 1868 444.8
A 4 32 17888 36.01 1855 1868 444.8
A 11 79 7520 12.71 1855 1868 444.8
B 15 22 89163 194.03 1892 1899 449.7
B 6 53 34096 71.59 1892 1899 449.7
B 0 190 29370 61.08 1892 1899 449.7
C 15 241 267349 557.01 1703 1761 476.8
C 3 111 20629 39.57 1703 1761 476.8
C 3 79 18017 34.09 1703 1761 476.8
D 10 125 155789 295.61 1691 1746 521.1
D 2 152 36188 66.1 1691 1746 521.1
D 13 169 28151 50.67 1691 1746 521.1

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