ASTROSAT CZTI

Data Quality Report

Orbit 20161114_G06_019T01_9000000796_level2

Creation date: 2017-09-19T02:18:41.678059
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_019T01_9000000796cztM0_level2.evt modeM0/AS1G06_019T01_9000000796cztM0_level2_quad_clean.evt
Size (bytes)4,632,912,000810,596,160
Size4.3 GB 773.0 MB
Events in quadrant A39,005,9265,046,277
Events in quadrant B36,748,2135,095,452
Events in quadrant C29,342,9205,098,050
Events in quadrant D30,873,5724,903,767

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01592170
B01516330
C01324450
D01382920

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01030
D01040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013220
B013120
C013380
D013180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424820203.144067%
B6401826994.216002%
C642775500.855672%
D642718931.389429%

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 79498 65724 1036 1036 1.30% 1.58%
B 79498 65642 1171 1171 1.47% 1.78%
C 79498 65830 2 2 0.00% 0.00%
D 79498 65751 336 336 0.42% 0.51%

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 8 15 9232709 5972.64 7574 7414 1544.6
A 0 254 356224 225.83 7574 7414 1544.6
A 13 170 154867 95.46 7574 7414 1544.6
B 3 64 6354424 4380.21 7590 7421 1449.0
B 15 204 299794 201.77 7590 7421 1449.0
B 15 85 242214 162.04 7590 7421 1449.0
C 1 16 375332 214.61 7388 7430 1714.2
C 9 68 69560 36.24 7388 7430 1714.2
C 13 61 58818 29.98 7388 7430 1714.2
D 13 169 1813669 997.51 7382 7165 1811.0
D 8 195 305823 164.91 7382 7165 1811.0
D 5 97 293504 158.11 7382 7165 1811.0

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