ASTROSAT CZTI

Data Quality Report

Orbit 42385

Creation date: 2024-06-27T22:39:39.873495
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/AS1C06_010T01_9000005800_42385cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42385cztM0_level2_quad_clean.evt
Size (bytes)307,500,48088,833,600
Size293.3 MB 84.7 MB
Events in quadrant A2,854,495602,702
Events in quadrant B2,553,270600,420
Events in quadrant C2,775,905578,440
Events in quadrant D2,788,360539,646

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115042
B0113052
C0114793
D0119402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5268150.284738%
B5268891.689446%
C5267420.797418%
D5267631.196127%

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 7121 5269 1 1 0.01% 0.02%
B 7121 5269 60 60 0.84% 1.14%
C 7120 5268 31 31 0.44% 0.59%
D 7120 5268 49 49 0.69% 0.93%

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 594046 4992.33 581 568 118.9
A 13 254 6467 49.62 581 568 118.9
A 13 6 6443 49.42 581 568 118.9
B 4 81 237751 2171.55 568 552 109.2
B 0 245 20673 184.21 568 552 109.2
B 5 172 19986 177.92 568 552 109.2
C 14 254 269165 2067.04 556 559 129.9
C 15 214 223422 1715.03 556 559 129.9
C 8 79 52376 398.75 556 559 129.9
D 10 118 131362 962.68 563 547 135.9
D 13 249 78690 575.06 563 547 135.9
D 6 219 77753 568.17 563 547 135.9

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