ASTROSAT CZTI

Data Quality Report

Orbit 11524

Creation date: 2024-06-27T16:14:13.997337
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/AS1A04_022T05_9000001690_11524cztM0_level2.evt modeM0/AS1A04_022T05_9000001690_11524cztM0_level2_quad_clean.evt
Size (bytes)636,056,64090,912,960
Size606.6 MB 86.7 MB
Events in quadrant A6,219,484549,630
Events in quadrant B4,619,223564,516
Events in quadrant C3,084,081606,609
Events in quadrant D4,883,523561,689

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231622
B0181391
C0137931
D0189251

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A675296514.292062%
B67523785.598341%
C6752320.473934%
D67522834.191351%

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 7543 6753 535 535 7.09% 7.92%
B 7543 6754 218 218 2.89% 3.23%
C 7543 6754 1 1 0.01% 0.01%
D 7543 6754 163 163 2.16% 2.41%

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 3172127 20783.19 745 728 152.6
A 1 162 52690 340.52 745 728 152.6
A 9 143 31742 203.24 745 728 152.6
B 4 239 1248406 8326.81 784 766 149.8
B 11 51 102823 681.13 784 766 149.8
B 15 204 75427 498.29 784 766 149.8
C 13 61 5615 26.16 790 795 184.3
C 14 234 3402 14.15 790 795 184.3
C 3 202 1940 6.21 790 795 184.3
D 13 152 1131229 6062.07 779 759 186.5
D 1 52 297349 1590.44 779 759 186.5
D 5 222 181607 969.78 779 759 186.5

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