ASTROSAT CZTI

Data Quality Report

Orbit 20160929_G05_204T01_9000000688_level2

Creation date: 2017-10-18T05:35:46.995683
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_204T01_9000000688cztM0_level2.evt modeM0/AS1G05_204T01_9000000688cztM0_level2_quad_clean.evt
Size (bytes)3,976,776,0001,003,602,240
Size3.7 GB 957.1 MB
Events in quadrant A24,588,2746,728,433
Events in quadrant B30,661,3176,769,747
Events in quadrant C24,670,5566,842,003
Events in quadrant D36,874,0256,354,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011020
B011060
C011020
D011040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01124520
B01292580
C01125010
D01472970

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A540444930.912220%
B540159011.668055%
C540194160.770099%
D5399228905.352645%

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 107828 54125 37 37 0.03% 0.07%
B 107828 54123 129 129 0.12% 0.24%
C 107828 54126 33 33 0.03% 0.06%
D 107828 54120 2200 2200 2.04% 4.07%

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 445531 354.62 6207 6076 1239.2
A 13 6 115815 88.55 6207 6076 1239.2
A 15 174 89766 67.53 6207 6076 1239.2
B 15 204 4399222 3774.61 6270 6122 1163.9
B 11 51 444767 376.89 6270 6122 1163.9
B 0 219 437305 370.48 6270 6122 1163.9
C 9 247 455327 323.78 6112 6144 1387.3
C 14 67 223882 156.95 6112 6144 1387.3
C 1 16 101569 68.78 6112 6144 1387.3
D 2 33 8132290 5642.24 5976 5794 1440.3
D 2 152 2524868 1749.0 5976 5794 1440.3
D 2 63 1241790 858.15 5976 5794 1440.3

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