ASTROSAT CZTI

Data Quality Report

Orbit 38859

Creation date: 2024-06-27T21:57:21.700284
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_077T06_9000005408_38859cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38859cztM0_level2_quad_clean.evt
Size (bytes)375,615,36079,107,840
Size358.2 MB 75.4 MB
Events in quadrant A2,557,371561,687
Events in quadrant B2,722,203569,418
Events in quadrant C2,719,518545,065
Events in quadrant D5,509,997364,965

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105822
B0114662
C0111831
D0198191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A506480.157978%
B5063851.678847%
C5064380.750395%
D5064144928.613744%

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 6377 5065 2 2 0.03% 0.04%
B 6377 5065 63 63 0.99% 1.24%
C 6377 5065 32 32 0.50% 0.63%
D 6376 5064 1366 1366 21.42% 26.97%

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 321752 2748.14 566 554 116.9
A 13 248 42809 361.53 566 554 116.9
A 13 254 7522 59.62 566 554 116.9
B 5 184 286121 2622.97 561 545 108.9
B 5 172 104331 953.26 561 545 108.9
B 4 171 76085 693.82 561 545 108.9
C 14 254 332452 2563.67 553 556 129.5
C 15 214 208447 1605.82 553 556 129.5
C 2 16 11107 81.5 553 556 129.5
D 2 250 3385903 32193.73 426 413 105.2
D 10 118 131652 1247.99 426 413 105.2
D 13 249 104288 987.78 426 413 105.2

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