ASTROSAT CZTI

Data Quality Report

Orbit 29321

Creation date: 2024-06-27T20:02:42.048132
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/AS1A10_050T03_9000004216_29321cztM0_level2.evt modeM0/AS1A10_050T03_9000004216_29321cztM0_level2_quad_clean.evt
Size (bytes)1,164,231,360177,877,440
Size1.1 GB 169.6 MB
Events in quadrant A6,646,9761,151,987
Events in quadrant B9,624,0221,080,504
Events in quadrant C8,020,1131,129,990
Events in quadrant D10,048,3461,083,921

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02800
B02800
C02800
D02800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282543
B0376293
C0326753
D0392003

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13612590.433441%
B1361212829.418160%
C136133562.615147%
D136136334.649967%

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 16047 13615 5 5 0.03% 0.04%
B 16047 13614 864 864 5.38% 6.35%
C 16048 13616 6 6 0.04% 0.04%
D 16048 13616 431 431 2.69% 3.17%

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 5 98 59897 171.86 1686 1650 338.9
A 15 174 41972 118.97 1686 1650 338.9
A 13 254 28934 80.5 1686 1650 338.9
B 10 245 2960926 9776.18 1589 1544 302.7
B 0 190 158096 517.16 1589 1544 302.7
B 5 172 88697 287.91 1589 1544 302.7
C 3 233 1236948 3247.71 1620 1634 380.4
C 14 238 290966 760.67 1620 1634 380.4
C 14 254 53033 135.13 1620 1634 380.4
D 8 195 1526071 3914.66 1619 1577 389.4
D 7 80 1127779 2891.91 1619 1577 389.4
D 1 52 639624 1638.4 1619 1577 389.4

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