ASTROSAT CZTI

Data Quality Report

Orbit 20191020_A07_130T01_9000003246_level2

Creation date: 2019-10-22T14:23:03.678582
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/AS1A07_130T01_9000003246cztM0_level2_bc.evt modeM0/AS1A07_130T01_9000003246cztM0_level2_quad_clean.evt
Size (bytes)2,041,450,560800,786,880
Size1.9 GB 763.7 MB
Events in quadrant A12,833,0745,099,944
Events in quadrant B14,485,8785,183,965
Events in quadrant C12,353,5034,999,631
Events in quadrant D18,020,0674,815,465

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01267010
B01326230
C01262830
D01487770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012340
B012340
C012340
D012340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A605945200.858171%
B6059411771.942437%
C605948101.336766%
D6059421953.622471%

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 69119 60589 3 3 0.00% 0.00%
B 69119 60588 85 85 0.12% 0.14%
C 69119 60586 6 6 0.01% 0.01%
D 69119 60589 136 136 0.20% 0.22%

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 13 254 98236 136.01 3262 3204 698.7
A 2 79 93547 129.3 3262 3204 698.7
A 10 253 74815 102.49 3262 3204 698.7
B 3 64 1368746 2216.38 3285 3204 616.1
B 0 197 243231 389.58 3285 3204 616.1
B 0 230 139745 221.62 3285 3204 616.1
C 9 54 81857 106.2 3169 3156 741.1
C 8 128 29305 35.28 3169 3156 741.1
C 10 91 24310 28.54 3169 3156 741.1
D 13 174 2771396 3786.09 3200 3090 731.2
D 1 52 1025656 1398.52 3200 3090 731.2
D 2 136 682904 929.75 3200 3090 731.2

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