ASTROSAT CZTI

Data Quality Report

Orbit 20160604_G05_182T01_9000000484_level2

Creation date: 2016-09-06T17:49:39.064786
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/AS1G05_182T01_9000000484cztM0_level2_bc.evt modeM0/AS1G05_182T01_9000000484cztM0_level2_quad_clean.evt
Size (bytes)2,598,171,840557,490,240
Size2.4 GB 531.7 MB
Events in quadrant A13,759,7643,498,284
Events in quadrant B15,526,4693,465,903
Events in quadrant C34,568,1553,078,172
Events in quadrant D11,399,4633,386,020

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01201370
B01253560
C02025350
D01087770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010280
B010280
C010280
D010280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5029424644.899193%
B5029426425.253112%
C502941537730.574224%
D502946781.348073%

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 59819 50275 355 355 0.59% 0.71%
B 59819 50291 94 94 0.16% 0.19%
C 59819 50291 1446 1446 2.42% 2.88%
D 59819 50292 43 43 0.07% 0.09%

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 2433826 4528.64 2430 2372 536.9
A 0 50 634707 1177.74 2430 2372 536.9
A 0 118 528092 979.17 2430 2372 536.9
B 0 173 2321222 4902.69 2462 2387 473.0
B 15 204 1853737 3914.29 2462 2387 473.0
B 14 167 603314 1270.53 2462 2387 473.0
C 2 53 26021776 54102.53 2144 2101 480.9
C 1 16 40974 80.83 2144 2101 480.9
C 8 128 31376 60.87 2144 2101 480.9
D 2 37 295643 519.88 2440 2346 564.2
D 13 239 288237 506.76 2440 2346 564.2
D 14 34 245251 430.56 2440 2346 564.2

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