ASTROSAT CZTI

Data Quality Report

Orbit 20170111_G06_026T01_9000000958_level2

Creation date: 2017-10-27T07:26:28.168881
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/AS1G06_026T01_9000000958cztM0_level2.evt modeM0/AS1G06_026T01_9000000958cztM0_level2_quad_clean.evt
Size (bytes)1,181,203,200233,576,640
Size1.1 GB 222.8 MB
Events in quadrant A8,354,5301,471,939
Events in quadrant B8,846,3851,483,383
Events in quadrant C8,172,9961,454,742
Events in quadrant D9,158,4371,401,359

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0378090
B0390170
C0374670
D0397080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A183401280.697928%
B183401600.872410%
C18340520.283533%
D183402061.123228%

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 26417 18346 8 8 0.03% 0.04%
B 26417 18346 11 11 0.04% 0.06%
C 26417 18346 0 0 0.00% 0.00%
D 26417 18346 117 117 0.44% 0.64%

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 15 234 47713 105.15 2140 2092 433.9
A 13 248 32295 69.61 2140 2092 433.9
A 0 226 20559 42.56 2140 2092 433.9
B 0 214 218276 524.35 2153 2097 412.3
B 0 228 92224 218.61 2153 2097 412.3
B 15 204 54196 126.37 2153 2097 412.3
C 13 61 16234 29.21 2085 2093 484.1
C 8 128 14793 26.23 2085 2093 484.1
C 1 16 9536 15.37 2085 2093 484.1
D 8 195 606687 1188.03 2083 2014 509.0
D 13 105 240184 467.94 2083 2014 509.0
D 12 233 187215 363.87 2083 2014 509.0

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