ASTROSAT CZTI

Data Quality Report

Orbit 20160907_G05_230T05_9000000648_level2

Creation date: 2021-08-24T14:01:44.435014
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1G05_230T05_9000000648cztM0_level2_bc.evt modeM0/AS1G05_230T05_9000000648cztM0_level2_quad_clean.evt
Size (bytes)3,892,884,4801,334,756,160
Size3.6 GB 1.2 GB
Events in quadrant A20,370,3598,377,565
Events in quadrant B30,946,2668,602,660
Events in quadrant C20,499,3228,564,858
Events in quadrant D38,810,0267,572,023

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021860
B021680
C021760
D021780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02206930
B02504700
C02187900
D03013840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10673015771.477560%
B10660733613.152701%
C1067239480.888281%
D10643796529.068275%

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 122663 107281 29 29 0.02% 0.03%
B 122663 107272 493 493 0.40% 0.46%
C 122663 107314 4 4 0.00% 0.00%
D 122663 107093 1068 1068 0.87% 1.00%

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 0 50 621980 549.08 5045 4920 1123.8
A 15 174 107258 91.06 5045 4920 1123.8
A 13 14 69394 57.37 5045 4920 1123.8
B 8 3 5988178 6093.95 5116 4957 981.8
B 15 204 1841287 1870.31 5116 4957 981.8
B 4 48 1322434 1341.86 5116 4957 981.8
C 12 4 217976 188.5 5076 4988 1129.9
C 1 16 141802 121.09 5076 4988 1129.9
C 10 34 108900 91.97 5076 4988 1129.9
D 13 235 4862331 4239.91 4812 4607 1145.7
D 2 33 4804951 4189.83 4812 4607 1145.7
D 12 22 4145918 3614.61 4812 4607 1145.7

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