ASTROSAT CZTI

Data Quality Report

Orbit 34677

Creation date: 2024-06-27T21:03:36.980867
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/AS1T04_078T01_9000004962_34677cztM0_level2.evt modeM0/AS1T04_078T01_9000004962_34677cztM0_level2_quad_clean.evt
Size (bytes)565,280,64077,500,800
Size539.1 MB 73.9 MB
Events in quadrant A3,665,427484,616
Events in quadrant B4,569,760486,201
Events in quadrant C2,925,628504,103
Events in quadrant D5,571,820471,572

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147523
B0174562
C0122482
D0205822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A57232404.193605%
B57235409.435611%
C5723320.559147%
D57231883.284990%

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 7276 5724 178 178 2.45% 3.11%
B 7276 5724 353 353 4.85% 6.17%
C 7276 5724 25 25 0.34% 0.44%
D 7276 5724 125 125 1.72% 2.18%

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 15 169 1064435 8232.32 643 631 129.2
A 10 83 45769 349.3 643 631 129.2
A 9 143 16267 121.0 643 631 129.2
B 5 172 1546852 12644.04 633 617 122.3
B 5 255 230378 1878.83 633 617 122.3
B 0 190 182325 1485.88 633 617 122.3
C 15 214 244164 1605.4 639 642 151.7
C 0 10 103914 680.81 639 642 151.7
C 14 67 64497 420.96 639 642 151.7
D 8 195 1805359 11530.12 631 612 156.5
D 7 223 836699 5341.57 631 612 156.5
D 2 249 136711 869.51 631 612 156.5

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