ASTROSAT CZTI

Data Quality Report

Orbit 13792

Creation date: 2024-06-27T16:46:10.123564
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/AS1A04_199T01_9000002040_13792cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13792cztM0_level2_quad_clean.evt
Size (bytes)457,830,72092,520,000
Size436.6 MB 88.2 MB
Events in quadrant A3,235,433593,194
Events in quadrant B3,390,529609,918
Events in quadrant C3,216,616589,580
Events in quadrant D3,582,785557,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137273
B0142422
C0135772
D0150962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6477681.049869%
B6477811.250579%
C6477360.555813%
D6477711.096187%

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 8848 6480 7 7 0.08% 0.11%
B 8848 6480 4 4 0.05% 0.06%
C 8848 6480 6 6 0.07% 0.09%
D 8848 6480 35 35 0.40% 0.54%

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 69 29407 172.55 816 798 165.8
A 15 157 21073 122.28 816 798 165.8
A 1 162 20986 121.76 816 798 165.8
B 0 219 117739 750.59 822 799 155.8
B 4 173 24234 150.42 822 799 155.8
B 4 80 21108 130.36 822 799 155.8
C 3 233 84317 450.05 797 802 185.6
C 14 234 25831 134.88 797 802 185.6
C 13 61 5763 26.73 797 802 185.6
D 1 52 281380 1331.93 776 761 210.7
D 13 249 191792 906.71 776 761 210.7
D 6 128 49196 229.89 776 761 210.7

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