ASTROSAT CZTI

Data Quality Report

Orbit 20180101_C03_014T02_9000001806_level2

Creation date: 2018-08-01T22:54:38.818646
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/AS1C03_014T02_9000001806cztM0_level2_bc.evt modeM0/AS1C03_014T02_9000001806cztM0_level2_quad_clean.evt
Size (bytes)1,760,454,720745,044,480
Size1.6 GB 710.5 MB
Events in quadrant A15,436,3575,071,028
Events in quadrant B14,598,1474,890,498
Events in quadrant C8,779,3015,103,713
Events in quadrant D11,892,4584,873,427

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01121790
B01119500
C0814820
D0922860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07800
B07800
C07800
D07800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3827514843.877204%
B38275404110.557805%
C382754271.115611%
D3827512223.192685%

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 46360 38274 13 13 0.03% 0.03%
B 46361 38253 226 226 0.49% 0.59%
C 46360 38275 22 22 0.05% 0.06%
D 46360 38273 199 199 0.43% 0.52%

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 13 251 4899662 10950.47 2056 2032 447.3
A 8 15 1511649 3375.31 2056 2032 447.3
A 1 162 530241 1181.01 2056 2032 447.3
B 4 239 4733595 12738.99 1974 1934 371.4
B 11 51 562087 1508.09 1974 1934 371.4
B 3 64 340853 912.47 1974 1934 371.4
C 15 208 582739 1303.69 2019 2004 445.5
C 4 175 117851 260.06 2019 2004 445.5
C 5 112 101334 222.98 2019 2004 445.5
D 1 52 1992512 4215.64 2028 1963 472.2
D 13 104 466084 982.93 2028 1963 472.2
D 12 221 269474 566.54 2028 1963 472.2

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