ASTROSAT CZTI

Data Quality Report

Orbit 38954

Creation date: 2024-06-27T21:58:34.973244
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_064T01_9000005416_38954cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38954cztM0_level2_quad_clean.evt
Size (bytes)321,891,84094,429,440
Size307.0 MB 90.1 MB
Events in quadrant A2,874,757642,955
Events in quadrant B2,541,156656,205
Events in quadrant C2,651,321633,107
Events in quadrant D3,463,942581,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115593
B0106102
C0107032
D0136912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4933490.993310%
B4933260.527063%
C4933360.729779%
D49331042.108251%

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 7026 4934 45 45 0.64% 0.91%
B 7026 4934 13 13 0.19% 0.26%
C 7026 4934 38 38 0.54% 0.77%
D 7026 4934 96 96 1.37% 1.95%

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 423387 3631.69 581 571 116.4
A 13 248 180846 1548.43 581 571 116.4
A 9 143 13844 114.01 581 571 116.4
B 0 230 62744 572.31 581 567 108.6
B 5 172 59561 543.01 581 567 108.6
B 15 85 55308 503.86 581 567 108.6
C 15 214 214323 1615.8 580 584 132.3
C 14 254 126452 951.52 580 584 132.3
C 15 159 27635 204.5 580 584 132.3
D 12 227 476971 3463.96 572 559 137.5
D 12 235 245170 1778.55 572 559 137.5
D 2 249 131550 952.43 572 559 137.5

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