ASTROSAT CZTI

Data Quality Report

Orbit 20160519_G05_211T01_9000000464_level2

Creation date: 2016-09-06T17:50:12.211231
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_211T01_9000000464cztM0_level2_bc.evt modeM0/AS1G05_211T01_9000000464cztM0_level2_quad_clean.evt
Size (bytes)3,915,299,5201,159,689,600
Size3.6 GB 1.1 GB
Events in quadrant A26,953,5257,068,809
Events in quadrant B27,405,7567,110,448
Events in quadrant C35,560,0016,882,433
Events in quadrant D21,473,7426,835,886

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02429370
B02372020
C02730190
D02244600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021420
B021420
C021420
D021420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10541631933.028952%
B10541621212.012029%
C10541659655.658534%
D10541516901.603187%

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 126713 105417 118 118 0.09% 0.11%
B 126713 105412 37 37 0.03% 0.04%
C 126713 105409 1094 1094 0.86% 1.04%
D 126713 105411 51 51 0.04% 0.05%

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 50 5598744 5148.91 4877 4756 1086.4
A 0 118 1470121 1348.78 4877 4756 1086.4
A 8 15 337670 306.43 4877 4756 1086.4
B 15 204 4644764 4841.98 4957 4804 958.3
B 8 3 740230 767.45 4957 4804 958.3
B 15 85 554775 573.92 4957 4804 958.3
C 7 220 10425499 9802.31 4753 4664 1063.1
C 1 192 5399559 5074.68 4753 4664 1063.1
C 1 16 351097 325.87 4753 4664 1063.1
D 13 46 771747 677.53 4874 4686 1132.1
D 13 239 387639 338.26 4874 4686 1132.1
D 13 223 386047 336.85 4874 4686 1132.1

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