ASTROSAT CZTI

Data Quality Report

Orbit 20180728_T02_073T01_9000002260_level2

Creation date: 2018-08-08T15:28:53.469287
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/AS1T02_073T01_9000002260cztM0_level2_bc.evt modeM0/AS1T02_073T01_9000002260cztM0_level2_quad_clean.evt
Size (bytes)7,308,797,7602,801,390,400
Size6.8 GB 2.6 GB
Events in quadrant A44,859,39617,873,275
Events in quadrant B44,743,48118,227,033
Events in quadrant C50,273,75217,899,448
Events in quadrant D67,462,62916,763,823

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03400
B03400
C03400
D03410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04390920
B04347810
C04413340
D05277860

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041900
B041900
C041900
D041900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20571640271.957553%
B20571630421.478738%
C20571620811.011589%
D205716114685.574676%

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 244643 205706 43 43 0.02% 0.02%
B 244643 205697 50 50 0.02% 0.02%
C 244643 205704 15 15 0.01% 0.01%
D 244643 205699 1590 1590 0.65% 0.77%

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 15 239 3009679 1292.51 10747 10556 2320.4
A 9 143 252842 104.42 10747 10556 2320.4
A 2 79 157292 63.24 10747 10556 2320.4
B 10 16 1097313 532.52 10893 10616 2040.7
B 4 173 442693 211.73 10893 10616 2040.7
B 3 64 345185 163.95 10893 10616 2040.7
C 3 233 7713107 3313.18 10639 10516 2324.8
C 7 247 749969 318.07 10639 10516 2324.8
C 4 254 109662 42.65 10639 10516 2324.8
D 13 122 14523778 6043.5 10455 10104 2401.5
D 1 255 5159126 2144.05 10455 10104 2401.5
D 2 33 3432509 1425.09 10455 10104 2401.5

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