ASTROSAT CZTI

Data Quality Report

Orbit 11799

Creation date: 2024-06-27T16:18:26.736842
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_058T09_9000001744_11799cztM0_level2.evt modeM0/AS1G08_058T09_9000001744_11799cztM0_level2_quad_clean.evt
Size (bytes)548,164,80075,300,480
Size522.8 MB 71.8 MB
Events in quadrant A3,690,977454,866
Events in quadrant B5,622,701441,531
Events in quadrant C3,259,939458,732
Events in quadrant D3,558,151442,590

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151503
B0212882
C0143322
D0153022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69211732.499639%
B69215758.308048%
C6921871.257044%
D69211842.658575%

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 7622 6923 2 2 0.03% 0.03%
B 7622 6923 294 294 3.86% 4.25%
C 7622 6923 0 0 0.00% 0.00%
D 7622 6922 49 49 0.64% 0.71%

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 117465 664.47 854 834 175.5
A 8 15 115496 653.25 854 834 175.5
A 1 178 57981 325.58 854 834 175.5
B 3 64 1582912 9774.85 839 817 161.9
B 4 239 492991 3040.86 839 817 161.9
B 11 51 91170 558.24 839 817 161.9
C 13 61 6181 27.4 835 841 194.9
C 14 234 3601 14.16 835 841 194.9
C 1 3 2981 10.98 835 841 194.9
D 1 52 274136 1261.52 813 794 216.7
D 13 104 47075 213.59 813 794 216.7
D 9 85 44821 203.19 813 794 216.7

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