ASTROSAT CZTI

Data Quality Report

Orbit 20170906_A03_127T02_9000001522_level2

Creation date: 2017-10-18T13:03:33.142366
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/AS1A03_127T02_9000001522cztM0_level2.evt modeM0/AS1A03_127T02_9000001522cztM0_level2_quad_clean.evt
Size (bytes)3,803,181,120940,052,160
Size3.5 GB 896.5 MB
Events in quadrant A24,799,5146,052,324
Events in quadrant B26,411,0966,035,470
Events in quadrant C23,347,5276,686,779
Events in quadrant D37,188,9116,210,946

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01066560
B01104980
C01055460
D01450580

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011050
B011200
C011200
D010880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0970
B0970
C0970
D0970

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495506371.285570%
B4831613242.740293%
C518593550.684548%
D5280431696.001439%

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 105327 54904 204 204 0.19% 0.37%
B 105327 53687 559 559 0.53% 1.04%
C 105327 57033 11 11 0.01% 0.02%
D 105327 55814 2662 2662 2.53% 4.77%

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 1687189 1485.96 5670 5537 1131.7
A 3 80 475884 415.61 5670 5537 1131.7
A 13 251 338261 294.0 5670 5537 1131.7
B 4 239 3456697 3361.6 5569 5430 1026.7
B 11 51 443389 426.58 5569 5430 1026.7
B 0 214 416765 400.65 5569 5430 1026.7
C 14 234 134058 95.11 5945 5971 1346.7
C 13 61 44366 28.51 5945 5971 1346.7
C 4 175 18386 9.22 5945 5971 1346.7
D 2 16 7403938 5412.94 5807 5654 1366.8
D 1 52 2601669 1899.37 5807 5654 1366.8
D 1 20 2120964 1547.66 5807 5654 1366.8

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