ASTROSAT CZTI

Data Quality Report

Orbit 20190330_T03_090T01_9000002822_level2

Creation date: 2019-04-01T12:32:47.775499
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/AS1T03_090T01_9000002822cztM0_level2_bc.evt modeM0/AS1T03_090T01_9000002822cztM0_level2_quad_clean.evt
Size (bytes)2,651,368,320714,447,360
Size2.5 GB 681.4 MB
Events in quadrant A24,476,7434,433,586
Events in quadrant B15,842,0534,920,894
Events in quadrant C9,912,7924,854,742
Events in quadrant D26,909,6634,248,495

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09440
B09440
C09440
D09440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01030
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01634980
B01183310
C0966510
D01864280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46279853618.444651%
B4627820584.447037%
C462796671.441258%
D462791053222.757622%

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 60816 46255 597 597 0.98% 1.29%
B 60816 46275 266 266 0.44% 0.57%
C 60817 46279 1 1 0.00% 0.00%
D 60817 46274 148 148 0.24% 0.32%

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 14 235 15188678 29913.36 2363 2332 507.7
A 6 16 103778 199.82 2363 2332 507.7
A 13 254 53832 101.44 2363 2332 507.7
B 3 112 4427535 9271.64 2579 2526 477.3
B 0 189 552176 1151.67 2579 2526 477.3
B 7 220 482678 1006.05 2579 2526 477.3
C 3 233 195038 329.01 2508 2510 585.2
C 0 207 55424 90.42 2508 2510 585.2
C 8 128 15142 21.59 2508 2510 585.2
D 7 238 14531876 27335.48 2309 2239 531.5
D 12 218 1960927 3685.0 2309 2239 531.5
D 12 233 623866 1169.5 2309 2239 531.5

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