ASTROSAT CZTI

Data Quality Report

Orbit 41258

Creation date: 2024-06-27T22:26:38.429920
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/AS1A12_052T04_9000005638_41258cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41258cztM0_level2_quad_clean.evt
Size (bytes)497,692,80079,320,960
Size474.6 MB 75.6 MB
Events in quadrant A2,709,748594,672
Events in quadrant B2,346,981607,135
Events in quadrant C4,309,750565,052
Events in quadrant D8,673,444289,527

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108703
B0101832
C0161002
D0291042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4927100.202963%
B492750.101482%
C49272675.419119%
D4927255251.796225%

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 7080 4928 3 3 0.04% 0.06%
B 7080 4928 2 2 0.03% 0.04%
C 7080 4928 239 239 3.38% 4.85%
D 7080 4927 2474 2474 34.94% 50.21%

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 494454 4302.83 567 555 114.8
A 13 6 7741 62.6 567 555 114.8
A 13 254 7573 61.14 567 555 114.8
B 0 245 48119 447.65 557 542 106.3
B 4 249 38809 360.05 557 542 106.3
B 0 186 32265 298.48 557 542 106.3
C 9 54 1625721 12878.21 546 550 126.2
C 0 10 336935 2665.58 546 550 126.2
C 15 214 213348 1686.25 546 550 126.2
D 1 52 6697417 67423.75 406 395 99.3
D 5 222 250574 2518.73 406 395 99.3
D 13 249 79237 793.76 406 395 99.3

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