ASTROSAT CZTI

Data Quality Report

Orbit 20191005_A07_027T16_9000003222_level2

Creation date: 2019-10-07T12:12:56.709352
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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/AS1A07_027T16_9000003222cztM0_level2_bc.evt modeM0/AS1A07_027T16_9000003222cztM0_level2_quad_clean.evt
Size (bytes)398,995,200143,634,240
Size380.5 MB 137.0 MB
Events in quadrant A3,160,240884,846
Events in quadrant B2,471,269926,610
Events in quadrant C2,069,786902,548
Events in quadrant D3,615,442865,184

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265480
B0241520
C0231020
D0288030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111348287.436680%
B111343563.197413%
C111343393.044728%
D111346445.784085%

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 11664 11134 253 253 2.17% 2.27%
B 11664 11134 5 5 0.04% 0.04%
C 11664 11134 1 1 0.01% 0.01%
D 11664 11135 46 46 0.39% 0.41%

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 15 236 1031255 8602.91 533 520 119.8
A 5 16 71258 590.41 533 520 119.8
A 13 254 14787 119.08 533 520 119.8
B 3 64 125591 1145.85 553 537 109.1
B 0 197 98627 898.78 553 537 109.1
B 0 230 68443 622.21 553 537 109.1
C 10 23 4585 31.29 536 531 129.6
C 13 61 3004 19.09 536 531 129.6
C 10 22 2742 17.07 536 531 129.6
D 7 238 909094 7188.94 536 514 126.4
D 12 235 330141 2608.1 536 514 126.4
D 14 35 159903 1261.13 536 514 126.4

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