ASTROSAT CZTI

Data Quality Report

Orbit 21452

Creation date: 2024-06-27T18:28:05.440388
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/AS1A06_009T05_9000003164_21452cztM0_level2.evt modeM0/AS1A06_009T05_9000003164_21452cztM0_level2_quad_clean.evt
Size (bytes)475,580,160118,267,200
Size453.5 MB 112.8 MB
Events in quadrant A3,455,943815,160
Events in quadrant B3,265,474820,615
Events in quadrant C3,278,345771,595
Events in quadrant D3,996,055755,582

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141061
B0133891
C0136003
D0159231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6002991.649450%
B60031061.765784%
C60021161.932689%
D60021562.599134%

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 7272 6002 0 0 0.00% 0.00%
B 7273 6003 2 2 0.03% 0.03%
C 7271 6001 0 0 0.00% 0.00%
D 7272 6002 73 73 1.00% 1.22%

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 11 47 276971 1684.52 824 810 163.9
A 13 254 9602 53.63 824 810 163.9
A 0 226 7171 38.8 824 810 163.9
B 0 229 36926 242.75 808 793 148.8
B 0 190 28025 182.95 808 793 148.8
B 12 111 17114 109.65 808 793 148.8
C 3 233 154368 870.68 769 777 176.4
C 14 238 124633 702.12 769 777 176.4
C 13 61 5491 26.72 769 777 176.4
D 7 38 214385 1128.13 789 769 189.4
D 1 20 151434 795.68 789 769 189.4
D 12 235 124256 652.15 789 769 189.4

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