ASTROSAT CZTI

Data Quality Report

Orbit 10827

Creation date: 2024-06-27T16:04:15.056286
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/AS1A03_086T01_9000001568_10827cztM0_level2.evt modeM0/AS1A03_086T01_9000001568_10827cztM0_level2_quad_clean.evt
Size (bytes)647,493,12070,041,600
Size617.5 MB 66.8 MB
Events in quadrant A5,528,125418,299
Events in quadrant B5,039,777417,123
Events in quadrant C3,302,176429,174
Events in quadrant D5,301,993404,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210263
B0192912
C0136492
D0204962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64755218.046332%
B64755328.216216%
C6475911.405405%
D64752634.061776%

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 7710 6475 302 302 3.92% 4.66%
B 7710 6476 269 269 3.49% 4.15%
C 7710 6476 0 0 0.00% 0.00%
D 7710 6475 161 161 2.09% 2.49%

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 8 5 2111498 12480.9 839 824 169.1
A 15 174 102429 600.81 839 824 169.1
A 13 251 81212 475.35 839 824 169.1
B 4 239 1523646 9476.61 842 827 160.7
B 10 245 102785 634.49 842 827 160.7
B 4 173 44294 270.5 842 827 160.7
C 5 207 6804 30.61 844 848 194.6
C 13 61 6228 27.65 844 848 194.6
C 14 234 4218 17.32 844 848 194.6
D 5 222 1054832 5238.35 837 816 201.2
D 8 195 818869 4065.64 837 816 201.2
D 12 227 52243 255.58 837 816 201.2

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