ASTROSAT CZTI

Data Quality Report

Orbit 37985

Creation date: 2024-06-27T21:46:58.415162
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/AS1A11_082T01_9000005356_37985cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37985cztM0_level2_quad_clean.evt
Size (bytes)381,035,52055,252,800
Size363.4 MB 52.7 MB
Events in quadrant A5,055,609335,933
Events in quadrant B2,742,287345,464
Events in quadrant C2,543,164346,455
Events in quadrant D3,386,518304,577

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185073
B0109762
C0102622
D0131202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4855992.039135%
B4855671.380021%
C485580.164779%
D48551873.851699%

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 7009 4856 51 51 0.73% 1.05%
B 7009 4856 45 45 0.64% 0.93%
C 7009 4856 2 2 0.03% 0.04%
D 7009 4856 158 158 2.25% 3.25%

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 15 222 2316526 19336.72 596 587 119.8
A 10 83 345021 2875.82 596 587 119.8
A 12 16 52379 432.43 596 587 119.8
B 4 81 117436 1047.03 595 581 111.6
B 5 184 107295 956.17 595 581 111.6
B 15 85 54011 478.74 595 581 111.6
C 15 214 209745 1545.54 590 595 135.3
C 0 10 12501 87.98 590 595 135.3
C 14 254 7374 50.09 590 595 135.3
D 12 233 420946 2962.78 584 568 141.9
D 2 249 189417 1330.99 584 568 141.9
D 1 47 115239 808.19 584 568 141.9

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