ASTROSAT CZTI

Data Quality Report

Orbit 20170116_A02_155T01_9000000966_level2

Creation date: 2017-09-22T21:16:39.495003
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/AS1A02_155T01_9000000966cztM0_level2.evt modeM0/AS1A02_155T01_9000000966cztM0_level2_quad_clean.evt
Size (bytes)6,036,675,8401,080,187,200
Size5.6 GB 1.0 GB
Events in quadrant A41,164,2666,719,236
Events in quadrant B45,002,9796,825,490
Events in quadrant C43,843,1186,705,989
Events in quadrant D46,884,9146,446,354

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017920
B017920
C017920
D017920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01825080
B01919330
C01910280
D01958510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8781312431.415508%
B8781316821.915434%
C8781314351.634154%
D8781314161.612518%

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 102036 87830 174 174 0.17% 0.20%
B 102036 87830 523 523 0.51% 0.60%
C 102036 87830 546 546 0.54% 0.62%
D 102036 87830 612 612 0.60% 0.70%

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 798435 378.26 10336 10113 2084.0
A 8 15 248577 114.42 10336 10113 2084.0
A 13 14 112489 49.12 10336 10113 2084.0
B 4 239 1835230 931.49 10417 10179 1959.3
B 0 214 1197238 605.87 10417 10179 1959.3
B 4 81 998421 504.39 10417 10179 1959.3
C 9 68 2434247 1036.66 10116 10171 2338.4
C 4 254 1837469 781.44 10116 10171 2338.4
C 13 61 79356 29.59 10116 10171 2338.4
D 8 195 4556953 1854.83 10093 9799 2451.5
D 12 233 1558819 631.86 10093 9799 2451.5
D 14 34 998436 403.28 10093 9799 2451.5

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