ASTROSAT CZTI

Data Quality Report

Orbit 41412

Creation date: 2024-06-27T22:28:42.362110
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_035T01_9000005666_41412cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41412cztM0_level2_quad_clean.evt
Size (bytes)334,814,40090,120,960
Size319.3 MB 85.9 MB
Events in quadrant A3,081,279612,013
Events in quadrant B2,580,927622,472
Events in quadrant C3,129,082562,551
Events in quadrant D3,175,712548,250

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124293
B0114062
C0126632
D0130762

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5477180.328647%
B5477180.328647%
C54772374.327186%
D5477621.132007%

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 7179 5478 6 6 0.08% 0.11%
B 7179 5478 6 6 0.08% 0.11%
C 7179 5478 230 230 3.20% 4.20%
D 7179 5478 53 53 0.74% 0.97%

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 537731 4245.76 613 600 126.5
A 2 79 85853 673.88 613 600 126.5
A 15 254 28645 221.68 613 600 126.5
B 0 190 97385 820.12 608 589 118.0
B 5 255 42398 354.23 608 589 118.0
B 0 189 30872 256.58 608 589 118.0
C 0 10 621338 4609.6 577 580 134.7
C 15 214 239216 1772.05 577 580 134.7
C 0 15 9622 67.14 577 580 134.7
D 1 52 516002 3537.91 595 578 145.7
D 12 79 148275 1013.8 595 578 145.7
D 2 249 146608 1002.36 595 578 145.7

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