ASTROSAT CZTI

Data Quality Report

Orbit 20180801_G08_035T01_9000002268_level2

Creation date: 2018-08-03T10:34:05.959941
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/AS1G08_035T01_9000002268cztM0_level2_bc.evt modeM0/AS1G08_035T01_9000002268cztM0_level2_quad_clean.evt
Size (bytes)892,699,200268,464,960
Size851.3 MB 256.0 MB
Events in quadrant A6,245,3461,631,029
Events in quadrant B7,875,4531,692,768
Events in quadrant C4,572,4791,720,463
Events in quadrant D6,843,3671,577,959

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0574660
B0574760
C0447030
D0548370

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04460
B04460
C04460
D04460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2190618228.317356%
B2190610494.788642%
C219061110.506710%
D219069324.254542%

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 23882 21899 8 8 0.03% 0.04%
B 23882 21906 162 162 0.68% 0.74%
C 23882 21907 0 0 0.00% 0.00%
D 23882 21905 68 68 0.28% 0.31%

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 14 238 1872923 8100.16 1033 1009 231.1
A 14 237 294317 1269.2 1033 1009 231.1
A 9 143 55837 237.25 1033 1009 231.1
B 10 16 1488206 7089.83 1074 1044 209.8
B 10 245 1304440 6213.75 1074 1044 209.8
B 8 3 369385 1756.01 1074 1044 209.8
C 3 233 416288 1755.3 1054 1038 236.6
C 8 128 11270 43.25 1054 1038 236.6
C 7 247 9672 36.5 1054 1038 236.6
D 9 68 730846 2974.46 1034 994 245.4
D 1 255 554733 2256.72 1034 994 245.4
D 2 33 441637 1795.81 1034 994 245.4

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