ASTROSAT CZTI

Data Quality Report

Orbit 38822

Creation date: 2024-06-27T21:56:51.806326
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_061T07_9000005402_38822cztM0_level2.fits modeM0/AS1A12_061T07_9000005402_38822cztM0_level2_quad_clean.evt
Size (bytes)327,896,64096,756,480
Size312.7 MB 92.3 MB
Events in quadrant A3,012,200661,497
Events in quadrant B2,481,612683,484
Events in quadrant C2,647,629632,380
Events in quadrant D3,579,337577,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122593
B0108512
C0110842
D0144722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5352250.467115%
B535250.093423%
C535270.130792%
D5352300.560538%

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 7263 5353 7 7 0.10% 0.13%
B 7263 5353 0 0 0.00% 0.00%
C 7263 5353 6 6 0.08% 0.11%
D 7263 5353 23 23 0.32% 0.43%

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 386592 3114.42 612 601 123.9
A 13 248 197982 1592.59 612 601 123.9
A 9 143 47753 380.45 612 601 123.9
B 0 230 35252 291.08 616 599 119.0
B 12 111 14688 118.35 616 599 119.0
B 11 111 13537 108.68 616 599 119.0
C 15 214 238404 1731.75 595 602 137.3
C 1 23 31615 225.85 595 602 137.3
C 15 208 24101 171.13 595 602 137.3
D 2 16 573210 4034.08 587 573 141.9
D 12 235 381363 2682.57 587 573 141.9
D 12 227 202543 1422.83 587 573 141.9

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