ASTROSAT CZTI

Data Quality Report

Orbit 20170827_G07_048T01_9000001494_level2

Creation date: 2020-10-10T21:40:38.212760
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/AS1G07_048T01_9000001494cztM0_level2_bc.evt modeM0/AS1G07_048T01_9000001494cztM0_level2_quad_clean.evt
Size (bytes)230,699,52095,460,480
Size220.0 MB 91.0 MB
Events in quadrant A1,391,069619,152
Events in quadrant B1,522,255616,686
Events in quadrant C1,321,637614,754
Events in quadrant D2,293,841579,683

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113990583936490446
B113990583936490446
C113990583936490446
D113990583936490446

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01220
C01210
D01210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07920
B07910
C07890
D07950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A701727121.014650%
B6838210071.472610%
C703045220.742490%
D6983932684.679334%

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 7640 7123 0 0 0.00% 0.00%
B 7640 7093 4 4 0.05% 0.06%
C 7640 7123 0 0 0.00% 0.00%
D 7640 7114 60 60 0.79% 0.84%

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 8 15 51785 648.3 341 333 79.4
A 13 251 20999 260.39 341 333 79.4
A 13 253 3600 41.16 341 333 79.4
B 4 239 108770 1585.55 341 332 68.4
B 0 219 35183 509.58 341 332 68.4
B 0 214 30461 440.54 341 332 68.4
C 14 234 6530 80.75 335 330 76.8
C 13 61 2106 23.13 335 330 76.8
C 8 222 1693 17.75 335 330 76.8
D 1 52 561729 6860.57 334 321 81.8
D 1 20 111251 1355.6 334 321 81.8
D 5 222 105009 1279.32 334 321 81.8

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