ASTROSAT CZTI

Data Quality Report

Orbit 20151126_P01_889T01_9000000142_level2

Creation date: 2017-10-31T20:24:06.656100
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/AS1P01_889T01_9000000142cztM0_level2.evt modeM0/AS1P01_889T01_9000000142cztM0_level2_quad_clean.evt
Size (bytes)307,739,52015,287,040
Size293.5 MB 14.6 MB
Events in quadrant A2,081,62779,922
Events in quadrant B2,399,09679,306
Events in quadrant C2,365,81379,179
Events in quadrant D2,334,99975,659

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076350
B086010
C084930
D084120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204300.000000%
B204360.293686%
C2043914.454234%
D2043341.664219%

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 2043 2043 8 8 0.39% 0.39%
B 2043 2043 69 69 3.38% 3.38%
C 2043 2043 122 122 5.97% 5.97%
D 2043 2043 105 105 5.14% 5.14%

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 0 214 6582 46.36 540 544 130.2
A 15 127 2087 11.85 540 544 130.2
A 14 170 1990 11.1 540 544 130.2
B 8 38 151960 1142.44 569 572 132.5
B 0 220 24491 180.5 569 572 132.5
B 0 184 20579 150.98 569 572 132.5
C 9 83 299735 2049.24 519 536 146.0
C 10 19 11284 73.61 519 536 146.0
C 3 79 10711 69.69 519 536 146.0
D 7 207 368827 2414.04 496 512 152.6
D 8 144 29194 187.99 496 512 152.6
D 10 157 25964 166.82 496 512 152.6

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