ASTROSAT CZTI

Data Quality Report

Orbit 42446

Creation date: 2024-06-27T22:40:16.801016
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_001T10_9000005806_42446cztM0_level2.fits modeM0/AS1C07_001T10_9000005806_42446cztM0_level2_quad_clean.evt
Size (bytes)503,516,16080,956,800
Size480.2 MB 77.2 MB
Events in quadrant A3,081,022638,566
Events in quadrant B7,980,468306,762
Events in quadrant C2,693,100603,963
Events in quadrant D4,477,733536,543

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121942
B0271412
C0111362
D0167722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5220330.632184%
B5219277053.075302%
C521950.095804%
D52194378.373252%

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 7343 5221 20 20 0.27% 0.38%
B 7341 5219 2485 2485 33.85% 47.61%
C 7342 5220 2 2 0.03% 0.04%
D 7342 5220 383 383 5.22% 7.34%

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 613302 5135.46 589 579 119.3
A 14 223 78033 649.17 589 579 119.3
A 13 248 57452 476.67 589 579 119.3
B 0 186 6198554 81106.18 398 388 76.4
B 3 112 61347 797.68 398 388 76.4
B 5 255 59648 775.45 398 388 76.4
C 15 214 223108 1715.86 565 570 129.7
C 10 34 193762 1489.59 565 570 129.7
C 5 250 51173 390.17 565 570 129.7
D 1 52 1423950 10498.97 559 544 135.6
D 13 171 334353 2462.16 559 544 135.6
D 1 47 111924 821.53 559 544 135.6

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