ASTROSAT CZTI

Data Quality Report

Orbit 20151229_G04_014T02_9000000232_level2

Creation date: 2016-09-06T17:56:03.861874
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/AS1G04_014T02_9000000232cztM0_level2_bc.evt modeM0/AS1G04_014T02_9000000232cztM0_level2_quad_clean.evt
Size (bytes)9,085,777,9203,002,731,200
Size8.5 GB 2.8 GB
Events in quadrant A109,484,84718,847,423
Events in quadrant B51,071,14319,974,686
Events in quadrant C42,724,15519,616,806
Events in quadrant D58,087,53818,609,588

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02550
B02550
C02550
D02550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041300
B041300
C041300
D041300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011170900
B09508690
C08539340
D08806900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202853202769.995415%
B20285323351.151080%
C2028537000.345077%
D202851108525.349739%

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 233155 202831 5132 5132 2.20% 2.53%
B 233155 202842 162 162 0.07% 0.08%
C 233155 202839 17 17 0.01% 0.01%
D 233155 202797 3400 3400 1.46% 1.68%

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 15 127 61808396 34154.7 8449 8257 1809.4
A 4 32 11657211 6437.96 8449 8257 1809.4
A 3 80 969665 531.34 8449 8257 1809.4
B 8 4 8551377 5303.37 9008 8741 1610.8
B 12 52 2155480 1332.72 9008 8741 1610.8
B 6 53 1262960 778.63 9008 8741 1610.8
C 15 241 6421615 3525.77 8684 8507 1818.9
C 3 79 649403 352.35 8684 8507 1818.9
C 3 111 370149 198.82 8684 8507 1818.9
D 13 73 15732343 8573.84 8401 8133 1834.0
D 9 53 4390641 2389.62 8401 8133 1834.0
D 2 16 1760627 955.57 8401 8133 1834.0

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