ASTROSAT CZTI

Data Quality Report

Orbit 27864

Creation date: 2024-06-27T19:45:20.200657
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/AS1A10_002T05_9000004024_27864cztM0_level2.evt modeM0/AS1A10_002T05_9000004024_27864cztM0_level2_quad_clean.evt
Size (bytes)585,722,880107,628,480
Size558.6 MB 102.6 MB
Events in quadrant A3,129,951770,743
Events in quadrant B3,257,064751,146
Events in quadrant C3,217,993712,797
Events in quadrant D7,739,009617,503

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128020
B0132180
C0130740
D0270940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58231041.786021%
B58241192.043269%
C58231372.352739%
D5823192733.092907%

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 7098 5823 0 0 0.00% 0.00%
B 7099 5824 3 3 0.04% 0.05%
C 7098 5823 0 0 0.00% 0.00%
D 7098 5823 1475 1475 20.78% 25.33%

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 6 16 10074 58.11 807 794 159.7
A 13 254 9646 55.43 807 794 159.7
A 13 248 7794 43.83 807 794 159.7
B 15 32 72572 493.39 780 762 145.5
B 10 245 50608 342.48 780 762 145.5
B 0 230 30034 201.12 780 762 145.5
C 3 233 144356 826.63 754 760 173.7
C 14 238 122169 698.91 754 760 173.7
C 15 208 11223 60.23 754 760 173.7
D 13 104 4204332 25895.52 685 668 162.3
D 1 52 420017 2583.28 685 668 162.3
D 2 250 402568 2475.79 685 668 162.3

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