ASTROSAT CZTI

Data Quality Report

Orbit 36661

Creation date: 2024-06-27T21:29:54.255518
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/AS1A11_049T05_9000005232_36661cztM0_level2.evt modeM0/AS1A11_049T05_9000005232_36661cztM0_level2_quad_clean.evt
Size (bytes)438,906,24065,318,400
Size418.6 MB 62.3 MB
Events in quadrant A2,753,903408,123
Events in quadrant B2,793,015410,273
Events in quadrant C3,048,577392,176
Events in quadrant D4,315,623374,668

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117043
B0117912
C0124032
D0166062

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560190.160686%
B5601310.553473%
C56011162.071059%
D56015069.034101%

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 7184 5602 3 3 0.04% 0.05%
B 7184 5602 15 15 0.21% 0.27%
C 7184 5602 71 71 0.99% 1.27%
D 7184 5602 425 425 5.92% 7.59%

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 10 83 212870 1602.05 651 639 132.5
A 13 254 9509 66.96 651 639 132.5
A 13 6 7950 55.19 651 639 132.5
B 5 255 135349 1076.89 646 631 125.1
B 0 221 35245 276.69 646 631 125.1
B 0 189 23184 180.28 646 631 125.1
C 0 10 334238 2285.42 621 626 146.0
C 15 214 254990 1742.53 621 626 146.0
C 14 254 27556 184.49 621 626 146.0
D 2 249 942839 6540.68 594 578 144.1
D 12 235 264275 1830.44 594 578 144.1
D 13 249 188022 1301.14 594 578 144.1

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