ASTROSAT CZTI

Data Quality Report

Orbit 16936

Creation date: 2024-06-27T17:29:43.132653
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/AS1T03_013T01_9000002514_16936cztM0_level2.evt modeM0/AS1T03_013T01_9000002514_16936cztM0_level2_quad_clean.evt
Size (bytes)489,741,12085,726,080
Size467.1 MB 81.8 MB
Events in quadrant A3,448,586561,331
Events in quadrant B2,846,576571,432
Events in quadrant C2,920,197539,275
Events in quadrant D5,223,938519,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138701
B0119861
C0120411
D0194131

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57871502.592017%
B5787581.002246%
C5787560.967686%
D57873075.304994%

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 7013 5789 65 65 0.93% 1.12%
B 7013 5789 0 0 0.00% 0.00%
C 7013 5789 0 0 0.00% 0.00%
D 7013 5789 213 213 3.04% 3.68%

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 15 174 681307 4738.53 715 701 143.6
A 0 23 18509 123.98 715 701 143.6
A 0 226 7467 47.11 715 701 143.6
B 0 197 19841 142.66 706 689 134.3
B 0 229 18665 133.9 706 689 134.3
B 3 209 18438 132.21 706 689 134.3
C 3 233 184733 1184.54 672 677 155.4
C 14 238 107073 684.74 672 677 155.4
C 13 61 4701 25.9 672 677 155.4
D 1 52 2511387 15319.78 680 660 163.9
D 2 152 92823 562.35 680 660 163.9
D 2 234 25955 154.34 680 660 163.9

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