ASTROSAT CZTI

Data Quality Report

Orbit 40686

Creation date: 2024-06-27T22:19:09.061893
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_029T02_9000005558_40686cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40686cztM0_level2_quad_clean.evt
Size (bytes)946,592,640246,481,920
Size902.7 MB 235.1 MB
Events in quadrant A8,265,6251,687,291
Events in quadrant B8,376,7651,729,013
Events in quadrant C8,230,1691,656,096
Events in quadrant D8,954,2901,311,605

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0341535
B0352054
C0340504
D0375504

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540
B0540
C0540
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15629360.230341%
B156291350.863779%
C15629890.569454%
D15629237615.202508%

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 19809 15632 11 11 0.06% 0.07%
B 19809 15632 95 95 0.48% 0.61%
C 19809 15632 75 75 0.38% 0.48%
D 19809 15632 213 213 1.08% 1.36%

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 1303860 3663.7 1731 1693 355.4
A 12 189 184278 513.71 1731 1693 355.4
A 6 10 72361 198.83 1731 1693 355.4
B 0 229 720028 2152.28 1721 1674 333.8
B 5 255 226855 674.67 1721 1674 333.8
B 0 190 224796 668.5 1721 1674 333.8
C 9 187 676183 1706.1 1694 1705 395.3
C 15 214 673418 1699.11 1694 1705 395.3
C 3 233 132492 330.83 1694 1705 395.3
D 2 249 685472 1791.01 1539 1498 381.9
D 12 191 589896 1540.74 1539 1498 381.9
D 12 227 468360 1222.49 1539 1498 381.9

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