ASTROSAT CZTI

Data Quality Report

Orbit 42860

Creation date: 2024-06-27T22:45:05.357827
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/AS1T05_138T01_9000005828_42860cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42860cztM0_level2_quad_clean.evt
Size (bytes)364,132,80092,793,600
Size347.3 MB 88.5 MB
Events in quadrant A3,452,532605,959
Events in quadrant B2,656,269628,709
Events in quadrant C2,786,659636,551
Events in quadrant D4,146,602545,978

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136772
B0117342
C0117072
D0160052

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56131061.888473%
B5613250.445395%
C5613170.302868%
D56133766.698735%

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 7195 5614 77 77 1.07% 1.37%
B 7195 5614 14 14 0.19% 0.25%
C 7195 5614 9 9 0.13% 0.16%
D 7195 5614 373 373 5.18% 6.64%

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 618378 4773.32 618 606 129.4
A 15 237 201448 1551.84 618 606 129.4
A 12 189 135473 1042.07 618 606 129.4
B 5 255 83410 682.49 616 600 121.3
B 5 172 53156 433.15 616 600 121.3
B 0 229 25415 204.52 616 600 121.3
C 15 214 228601 1569.61 613 619 145.2
C 14 254 59713 406.85 613 619 145.2
C 12 249 38950 263.9 613 619 145.2
D 10 118 782358 5321.54 595 579 146.9
D 2 249 301003 2044.97 595 579 146.9
D 12 6 208201 1413.28 595 579 146.9

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