ASTROSAT CZTI

Data Quality Report

Orbit 39130

Creation date: 2024-06-27T22:00:47.632608
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_025T11_9000005438_39130cztM0_level2.fits modeM0/AS1A12_025T11_9000005438_39130cztM0_level2_quad_clean.evt
Size (bytes)404,913,60088,390,080
Size386.2 MB 84.3 MB
Events in quadrant A3,354,577616,115
Events in quadrant B2,505,276625,977
Events in quadrant C2,818,929591,545
Events in quadrant D5,914,878486,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135243
B0106482
C0113912
D0210722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5082721.416765%
B5082220.432900%
C5082460.905155%
D508279515.643447%

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 7144 5083 34 34 0.48% 0.67%
B 7144 5083 10 10 0.14% 0.20%
C 7144 5083 35 35 0.49% 0.69%
D 7144 5083 655 655 9.17% 12.89%

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 15 223 463155 3828.85 595 584 120.8
A 10 83 422967 3496.2 595 584 120.8
A 9 143 80024 657.55 595 584 120.8
B 5 172 78462 685.17 591 574 113.7
B 0 190 61756 538.21 591 574 113.7
B 0 230 14876 125.81 591 574 113.7
C 9 187 317272 2355.51 580 583 134.4
C 15 214 212924 1579.38 580 583 134.4
C 0 10 20654 149.29 580 583 134.4
D 12 235 2121181 15545.77 552 537 136.4
D 5 222 726014 5318.24 552 537 136.4
D 2 249 610324 4470.16 552 537 136.4

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