ASTROSAT CZTI

Data Quality Report

Orbit 39951

Creation date: 2024-06-27T22:10:31.322765
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/AS1C07_001T01_9000005514_39951cztM0_level2.fits modeM0/AS1C07_001T01_9000005514_39951cztM0_level2_quad_clean.evt
Size (bytes)339,065,28091,693,440
Size323.4 MB 87.4 MB
Events in quadrant A2,804,812624,476
Events in quadrant B2,699,858639,153
Events in quadrant C2,598,361613,837
Events in quadrant D4,018,591513,668

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119303
B0119942
C0113902
D0160622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5508120.217865%
B5508681.234568%
C5508140.254176%
D55085109.259259%

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 7332 5510 7 7 0.10% 0.13%
B 7332 5510 58 58 0.79% 1.05%
C 7332 5510 10 10 0.14% 0.18%
D 7332 5510 501 501 6.83% 9.09%

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 465076 3905.24 585 573 118.9
A 7 192 26653 219.26 585 573 118.9
A 13 6 19824 161.85 585 573 118.9
B 5 255 271636 2409.1 584 569 112.5
B 4 171 92406 816.2 584 569 112.5
B 12 111 13960 119.01 584 569 112.5
C 15 214 232584 1756.82 572 575 132.1
C 9 54 58912 441.74 572 575 132.1
C 14 254 48352 361.78 572 575 132.1
D 1 47 964592 7321.78 541 526 131.7
D 2 250 265956 2015.86 541 526 131.7
D 2 249 218367 1654.43 541 526 131.7

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