ASTROSAT CZTI

Data Quality Report

Orbit 39565

Creation date: 2024-06-27T22:06:13.150831
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_018T01_9000005488_39565cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39565cztM0_level2_quad_clean.evt
Size (bytes)468,025,92085,731,840
Size446.3 MB 81.8 MB
Events in quadrant A3,550,964595,482
Events in quadrant B2,282,546616,794
Events in quadrant C6,253,594512,464
Events in quadrant D4,821,435495,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143003
B0109062
C0221982
D0181282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5361440.820742%
B5361190.354411%
C536190816.937139%
D536160311.247902%

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 7334 5362 38 38 0.52% 0.71%
B 7334 5362 7 7 0.10% 0.13%
C 7334 5362 906 906 12.35% 16.90%
D 7334 5362 566 566 7.72% 10.56%

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 15 222 832928 7383.11 558 548 112.7
A 10 83 424966 3764.54 558 548 112.7
A 13 248 82180 724.07 558 548 112.7
B 5 255 67255 615.9 560 545 108.3
B 12 111 13529 119.88 560 545 108.3
B 11 111 12191 107.52 560 545 108.3
C 15 208 2073943 17512.99 512 515 118.4
C 9 187 1943720 16413.08 512 515 118.4
C 15 214 210234 1771.37 512 515 118.4
D 12 227 1467811 11488.47 518 503 127.7
D 7 38 661261 5173.49 518 503 127.7
D 12 0 148947 1162.26 518 503 127.7

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