ASTROSAT CZTI

Data Quality Report

Orbit 18513

Creation date: 2024-06-27T17:50:50.848487
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/AS1A05_187T03_9000002748_18513cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18513cztM0_level2_quad_clean.evt
Size (bytes)627,379,20086,016,960
Size598.3 MB 82.0 MB
Events in quadrant A5,715,680485,506
Events in quadrant B3,267,468617,314
Events in quadrant C3,382,421573,576
Events in quadrant D6,217,641497,767

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210042
B0134772
C0137942
D0226192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6150140722.878049%
B61501272.065041%
C61501342.178862%
D6150106717.349593%

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 7465 6150 1081 1081 14.48% 17.58%
B 7465 6150 20 20 0.27% 0.33%
C 7465 6150 4 4 0.05% 0.07%
D 7465 6151 1017 1017 13.62% 16.53%

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 0 13 2737880 18885.93 722 708 144.9
A 14 111 182392 1253.58 722 708 144.9
A 15 192 10385 66.77 722 708 144.9
B 0 182 38102 243.13 815 799 153.4
B 12 111 17469 108.65 815 799 153.4
B 11 111 15163 93.62 815 799 153.4
C 3 233 151529 832.28 778 785 181.1
C 14 238 122905 674.24 778 785 181.1
C 9 54 77527 423.7 778 785 181.1
D 14 34 2780575 15320.48 751 732 181.4
D 7 238 216938 1191.57 751 732 181.4
D 13 168 193877 1064.48 751 732 181.4

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