ASTROSAT CZTI

Data Quality Report

Orbit 20181103_T03_015T01_9000002486_level2

Creation date: 2018-11-04T11:46:45.268466
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/AS1T03_015T01_9000002486cztM0_level2_bc.evt modeM0/AS1T03_015T01_9000002486cztM0_level2_quad_clean.evt
Size (bytes)1,479,481,920540,011,520
Size1.4 GB 515.0 MB
Events in quadrant A9,058,0023,705,425
Events in quadrant B7,164,5293,768,871
Events in quadrant C8,140,0763,609,238
Events in quadrant D18,445,8843,258,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05980
B05980
C05980
D05980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0719270
B0639460
C0676960
D01079030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2928610913.725330%
B292853171.082465%
C292855011.710773%
D29283470016.050268%

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 33949 29288 80 80 0.24% 0.27%
B 33949 29288 17 17 0.05% 0.06%
C 33949 29288 25 25 0.07% 0.09%
D 33949 29286 712 712 2.10% 2.43%

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 15 174 2512195 7636.74 1496 1466 328.8
A 14 4 793959 2410.48 1496 1466 328.8
A 3 1 22087 62.72 1496 1466 328.8
B 15 35 316377 1096.91 1510 1472 287.1
B 10 16 174683 603.35 1510 1472 287.1
B 0 189 163621 564.82 1510 1472 287.1
C 3 233 1870538 5496.58 1441 1430 340.0
C 0 207 649926 1907.07 1441 1430 340.0
C 7 247 84100 243.11 1441 1430 340.0
D 1 52 10167052 31808.72 1370 1323 319.6
D 15 0 884893 2764.7 1370 1323 319.6
D 13 232 691882 2160.77 1370 1323 319.6

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