ASTROSAT CZTI

Data Quality Report

Orbit 38320

Creation date: 2024-06-27T21:51:14.653847
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_001T12_9000005372_38320cztM0_level2.fits modeM0/AS1C07_001T12_9000005372_38320cztM0_level2_quad_clean.evt
Size (bytes)519,713,28083,560,320
Size495.6 MB 79.7 MB
Events in quadrant A2,771,656614,870
Events in quadrant B2,479,746625,859
Events in quadrant C2,591,371612,439
Events in quadrant D10,970,572295,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117333
B0112832
C0111612
D0363292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5458110.201539%
B5458190.348113%
C5458150.274826%
D5458292453.572737%

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 7311 5459 7 7 0.10% 0.13%
B 7311 5459 10 10 0.14% 0.18%
C 7311 5459 6 6 0.08% 0.11%
D 7311 5459 2644 2644 36.16% 48.43%

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 387767 3236.4 587 575 119.6
A 9 143 39298 323.67 587 575 119.6
A 12 189 29820 244.45 587 575 119.6
B 0 183 61460 544.74 586 572 111.8
B 15 35 28236 247.5 586 572 111.8
B 15 32 22758 198.49 586 572 111.8
C 15 214 233707 1734.41 580 583 134.4
C 0 10 25552 185.77 580 583 134.4
C 14 67 21703 157.13 580 583 134.4
D 10 203 5391492 46583.39 476 463 115.7
D 2 16 3152848 27239.47 476 463 115.7
D 12 235 138223 1190.37 476 463 115.7

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