ASTROSAT CZTI

Data Quality Report

Orbit 42158

Creation date: 2024-06-27T22:37:36.868002
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_088T23_9000005762_42158cztM0_level2.fits modeM0/AS1A12_088T23_9000005762_42158cztM0_level2_quad_clean.evt
Size (bytes)307,100,16073,537,920
Size292.9 MB 70.1 MB
Events in quadrant A2,911,403485,933
Events in quadrant B2,176,020516,290
Events in quadrant C2,086,300488,072
Events in quadrant D3,841,094418,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114742
B096652
C091142
D0145812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45241523.359859%
B4524130.287356%
C452420.044209%
D45244048.930150%

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 8650 4526 140 140 1.62% 3.09%
B 8650 4526 6 6 0.07% 0.13%
C 8650 4526 0 0 0.00% 0.00%
D 8650 4526 371 371 4.29% 8.20%

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 440362 4329.78 487 477 101.6
A 15 223 190637 1871.74 487 477 101.6
A 13 248 190462 1870.02 487 477 101.6
B 5 255 94968 980.13 494 482 96.4
B 15 33 81564 841.09 494 482 96.4
B 0 229 26172 266.49 494 482 96.4
C 15 214 185588 1615.94 486 489 114.5
C 12 249 3429 25.67 486 489 114.5
C 13 61 3228 23.91 486 489 114.5
D 12 6 981762 8585.26 463 450 114.3
D 6 252 422437 3691.86 463 450 114.3
D 1 52 324668 2836.5 463 450 114.3

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