ASTROSAT CZTI

Data Quality Report

Orbit 39856

Creation date: 2024-06-27T22:09:31.181780
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_022T01_9000005498_39856cztM0_level2.fits modeM0/AS1A12_022T01_9000005498_39856cztM0_level2_quad_clean.evt
Size (bytes)398,376,00090,270,720
Size379.9 MB 86.1 MB
Events in quadrant A2,948,673621,128
Events in quadrant B3,183,815616,195
Events in quadrant C4,338,398567,339
Events in quadrant D3,841,734537,978

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123463
B0132682
C0165412
D0153902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5580150.268817%
B55801562.795699%
C55803295.896057%
D55802013.602151%

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 7134 5581 9 9 0.13% 0.16%
B 7134 5581 113 113 1.58% 2.02%
C 7134 5581 294 294 4.12% 5.27%
D 7134 5581 178 178 2.50% 3.19%

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 502261 4057.88 604 591 123.6
A 13 248 91183 732.77 604 591 123.6
A 13 254 10453 79.77 604 591 123.6
B 4 170 570613 4953.64 597 581 115.1
B 0 230 63226 544.39 597 581 115.1
B 4 171 54340 467.17 597 581 115.1
C 9 187 1213363 8965.75 575 578 135.3
C 15 208 534277 3945.47 575 578 135.3
C 15 214 231838 1709.63 575 578 135.3
D 2 250 516620 3572.12 582 564 144.5
D 1 52 234112 1616.61 582 564 144.5
D 12 227 221869 1531.87 582 564 144.5

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